% \begin{flushright} % {/CDF/PUB/EXOTIC/CDFR/7991 \\ PRL draft v3 \\ \today\\ } % \end{flushright} Search for a Neutral Higgs Boson Decaying to a $W$ Boson Pair in $p\bar{p}$ Collisions at $\sqrt{s} = 1.96$~TeV
A.~Abulencia
We present the results of a search for standard model Higgs boson production with decay to $WW^{*}$, identified through the leptonic final states $e^{+}e^{-}\bar{\nu} \nu ,~e^{\pm}\mu^{\mp} \bar{\nu} \nu$ and $\mu^{+}\mu^{-} \bar{\nu} \nu$. This search uses 360 ${pb}^{-1}$ of data collected from $p\bar{p}$ collisions at $\sqrt{s}$ = 1.96 TeV by the upgraded Collider Detector at Fermilab (CDF II). We observe no signal excess and set 95\% confidence level upper limits on the production cross section times branching ratio for the Higgs boson to $WW^{*}$ or any new scalar particle with similar decay products. These upper limits range from 5.5 to 3.2 ${pb}$ for Higgs boson masses between 120 and 200 GeV/$c^2$.
January_2006_Authors.tex
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China} 
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439} 
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain} 
\affiliation{Baylor University, Waco, Texas  76798} 
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy} 
\affiliation{Brandeis University, Waltham, Massachusetts 02254} 
\affiliation{University of California, Davis, Davis, California  95616} 
\affiliation{University of California, Los Angeles, Los Angeles, California  90024} 
\affiliation{University of California, San Diego, La Jolla, California  92093} 
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106} 
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain} 
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213} 
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637} 
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia} 
\affiliation{Duke University, Durham, North Carolina  27708} 
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510} 
\affiliation{University of Florida, Gainesville, Florida  32611} 
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy} 
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland} 
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom} 
\affiliation{Harvard University, Cambridge, Massachusetts 02138} 
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland} 
\affiliation{University of Illinois, Urbana, Illinois 61801} 
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218} 
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany} 
\affiliation{High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan} 
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea} 
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720} 
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom} 
\affiliation{University College London, London WC1E 6BT, United Kingdom} 
\affiliation{Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain} 
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139} 
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7} 
\affiliation{University of Michigan, Ann Arbor, Michigan 48109} 
\affiliation{Michigan State University, East Lansing, Michigan  48824} 
\affiliation{Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia} 
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131} 
\affiliation{Northwestern University, Evanston, Illinois  60208} 
\affiliation{The Ohio State University, Columbus, Ohio  43210} 
\affiliation{Okayama University, Okayama 700-8530, Japan} 
\affiliation{Osaka City University, Osaka 588, Japan} 
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom} 
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy} 
\affiliation{LPNHE, Universite Pierre et Marie Curie/IN2P3-CNRS, UMR7585, Paris, F-75252 France} 
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104} 
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy} 
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260} 
\affiliation{Purdue University, West Lafayette, Indiana 47907} 
\affiliation{University of Rochester, Rochester, New York 14627} 
\affiliation{The Rockefeller University, New York, New York 10021} 
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy} 
\affiliation{Rutgers University, Piscataway, New Jersey 08855} 
\affiliation{Texas A\&M University, College Station, Texas 77843} 
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy} 
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan} 
\affiliation{Tufts University, Medford, Massachusetts 02155} 
\affiliation{Waseda University, Tokyo 169, Japan} 
\affiliation{Wayne State University, Detroit, Michigan  48201} 
\affiliation{University of Wisconsin, Madison, Wisconsin 53706} 
\affiliation{Yale University, New Haven, Connecticut 06520} 
\author{A.~Abulencia}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{D.~Acosta}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{J.~Adelman}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{T.~Affolder}
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106}
\author{T.~Akimoto}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{M.G.~Albrow}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{D.~Ambrose}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{S.~Amerio}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{D.~Amidei}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{A.~Anastassov}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{K.~Anikeev}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{A.~Annovi}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy}
\author{J.~Antos}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China}
\author{M.~Aoki}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{G.~Apollinari}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{J.-F.~Arguin}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{T.~Arisawa}
\affiliation{Waseda University, Tokyo 169, Japan}
\author{A.~Artikov}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{W.~Ashmanskas}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{A.~Attal}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{F.~Azfar}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{P.~Azzi-Bacchetta}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{P.~Azzurri}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{N.~Bacchetta}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{H.~Bachacou}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{W.~Badgett}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{A.~Barbaro-Galtieri}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{V.E.~Barnes}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{B.A.~Barnett}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218}
\author{S.~Baroiant}
\affiliation{University of California, Davis, Davis, California  95616}
\author{V.~Bartsch}
\affiliation{University College London, London WC1E 6BT, United Kingdom}
\author{G.~Bauer}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{F.~Bedeschi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{S.~Behari}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218}
\author{S.~Belforte}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{G.~Bellettini}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{J.~Bellinger}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{A.~Belloni}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{E.~Ben~Haim}
\affiliation{LPNHE, Universite Pierre et Marie Curie/IN2P3-CNRS, UMR7585, Paris, F-75252 France}
\author{D.~Benjamin}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{A.~Beretvas}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{J.~Beringer}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{T.~Berry}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{A.~Bhatti}
\affiliation{The Rockefeller University, New York, New York 10021}
\author{M.~Binkley}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{D.~Bisello}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{R.~E.~Blair}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{C.~Blocker}
\affiliation{Brandeis University, Waltham, Massachusetts 02254}
\author{B.~Blumenfeld}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218}
\author{A.~Bocci}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{A.~Bodek}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{V.~Boisvert}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{G.~Bolla}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{A.~Bolshov}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{D.~Bortoletto}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{J.~Boudreau}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260}
\author{A.~Boveia}
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106}
\author{B.~Brau}
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106}
\author{C.~Bromberg}
\affiliation{Michigan State University, East Lansing, Michigan  48824}
\author{E.~Brubaker}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{J.~Budagov}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{H.S.~Budd}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{S.~Budd}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{K.~Burkett}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{G.~Busetto}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{P.~Bussey}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}
\author{K.~L.~Byrum}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{S.~Cabrera}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{M.~Campanelli}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland}
\author{M.~Campbell}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{F.~Canelli}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{A.~Canepa}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{D.~Carlsmith}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{R.~Carosi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{S.~Carron}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{M.~Casarsa}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{A.~Castro}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy}
\author{P.~Catastini}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{D.~Cauz}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{M.~Cavalli-Sforza}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain}
\author{A.~Cerri}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{L.~Cerrito}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{S.H.~Chang}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{J.~Chapman}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{Y.C.~Chen}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China}
\author{M.~Chertok}
\affiliation{University of California, Davis, Davis, California  95616}
\author{G.~Chiarelli}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{G.~Chlachidze}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{F.~Chlebana}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{I.~Cho}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{K.~Cho}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{D.~Chokheli}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{J.P.~Chou}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{P.H.~Chu}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{S.H.~Chuang}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{K.~Chung}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{W.H.~Chung}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{Y.S.~Chung}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{M.~Ciljak}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{C.I.~Ciobanu}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{M.A.~Ciocci}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{A.~Clark}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland}
\author{D.~Clark}
\affiliation{Brandeis University, Waltham, Massachusetts 02254}
\author{M.~Coca}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{G.~Compostella}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{M.E.~Convery}
\affiliation{The Rockefeller University, New York, New York 10021}
\author{J.~Conway}
\affiliation{University of California, Davis, Davis, California  95616}
\author{B.~Cooper}
\affiliation{University College London, London WC1E 6BT, United Kingdom}
\author{K.~Copic}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{M.~Cordelli}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy}
\author{G.~Cortiana}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{F.~Cresciolo}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{A.~Cruz}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{C.~Cuenca~Almenar}
\affiliation{University of California, Davis, Davis, California  95616}
\author{J.~Cuevas}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{R.~Culbertson}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{D.~Cyr}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{S.~DaRonco}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{S.~D'Auria}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}
\author{M.~D'Onofrio}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain}
\author{D.~Dagenhart}
\affiliation{Brandeis University, Waltham, Massachusetts 02254}
\author{P.~de~Barbaro}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{S.~De~Cecco}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{A.~Deisher}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{G.~De~Lentdecker}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{M.~Dell'Orso}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{F.~Delli~Paoli}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{S.~Demers}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{L.~Demortier}
\affiliation{The Rockefeller University, New York, New York 10021}
\author{J.~Deng}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{M.~Deninno}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy}
\author{D.~De~Pedis}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{P.F.~Derwent}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{C.~Dionisi}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{J.R.~Dittmann}
\affiliation{Baylor University, Waco, Texas  76798}
\author{P.~DiTuro}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{C.~D\"{o}rr}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{S.~Donati}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{M.~Donega}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland}
\author{P.~Dong}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{J.~Donini}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{T.~Dorigo}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{S.~Dube}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{K.~Ebina}
\affiliation{Waseda University, Tokyo 169, Japan}
\author{J.~Efron}
\affiliation{The Ohio State University, Columbus, Ohio  43210}
\author{J.~Ehlers}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland}
\author{R.~Erbacher}
\affiliation{University of California, Davis, Davis, California  95616}
\author{D.~Errede}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{S.~Errede}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{R.~Eusebi}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{H.C.~Fang}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{S.~Farrington}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{I.~Fedorko}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{W.T.~Fedorko}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{R.G.~Feild}
\affiliation{Yale University, New Haven, Connecticut 06520}
\author{M.~Feindt}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{J.P.~Fernandez}
\affiliation{Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain}
\author{R.~Field}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{G.~Flanagan}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{L.R.~Flores-Castillo}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260}
\author{A.~Foland}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{S.~Forrester}
\affiliation{University of California, Davis, Davis, California  95616}
\author{G.W.~Foster}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{M.~Franklin}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{J.C.~Freeman}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{I.~Furic}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{M.~Gallinaro}
\affiliation{The Rockefeller University, New York, New York 10021}
\author{J.~Galyardt}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{J.E.~Garcia}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{M.~Garcia~Sciveres}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{A.F.~Garfinkel}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{C.~Gay}
\affiliation{Yale University, New Haven, Connecticut 06520}
\author{H.~Gerberich}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{D.~Gerdes}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{S.~Giagu}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{P.~Giannetti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{A.~Gibson}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{K.~Gibson}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{C.~Ginsburg}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{N.~Giokaris}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{K.~Giolo}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{M.~Giordani}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{P.~Giromini}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy}
\author{M.~Giunta}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{G.~Giurgiu}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{V.~Glagolev}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{D.~Glenzinski}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{M.~Gold}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131}
\author{N.~Goldschmidt}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{J.~Goldstein}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{G.~Gomez}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{G.~Gomez-Ceballos}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{M.~Goncharov}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{O.~Gonz\'{a}lez}
\affiliation{Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain}
\author{I.~Gorelov}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131}
\author{A.T.~Goshaw}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{Y.~Gotra}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260}
\author{K.~Goulianos}
\affiliation{The Rockefeller University, New York, New York 10021}
\author{A.~Gresele}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{M.~Griffiths}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{S.~Grinstein}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{C.~Grosso-Pilcher}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{R.C.~Group}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{U.~Grundler}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{J.~Guimaraes~da~Costa}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{Z.~Gunay-Unalan}
\affiliation{Michigan State University, East Lansing, Michigan  48824}
\author{C.~Haber}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{S.R.~Hahn}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{K.~Hahn}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{E.~Halkiadakis}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{A.~Hamilton}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{B.-Y.~Han}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{J.Y.~Han}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{R.~Handler}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{F.~Happacher}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy}
\author{K.~Hara}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{M.~Hare}
\affiliation{Tufts University, Medford, Massachusetts 02155}
\author{S.~Harper}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{R.F.~Harr}
\affiliation{Wayne State University, Detroit, Michigan  48201}
\author{R.M.~Harris}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{K.~Hatakeyama}
\affiliation{The Rockefeller University, New York, New York 10021}
\author{J.~Hauser}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{C.~Hays}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{A.~Heijboer}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{B.~Heinemann}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{J.~Heinrich}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{M.~Herndon}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{D.~Hidas}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{C.S.~Hill}
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106}
\author{D.~Hirschbuehl}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{A.~Hocker}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{A.~Holloway}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{S.~Hou}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China}
\author{M.~Houlden}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{S.-C.~Hsu}
\affiliation{University of California, San Diego, La Jolla, California  92093}
\author{B.T.~Huffman}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{R.E.~Hughes}
\affiliation{The Ohio State University, Columbus, Ohio  43210}
\author{J.~Huston}
\affiliation{Michigan State University, East Lansing, Michigan  48824}
\author{J.~Incandela}
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106}
\author{G.~Introzzi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{M.~Iori}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{Y.~Ishizawa}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{A.~Ivanov}
\affiliation{University of California, Davis, Davis, California  95616}
\author{B.~Iyutin}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{E.~James}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{D.~Jang}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{B.~Jayatilaka}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{D.~Jeans}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{H.~Jensen}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{E.J.~Jeon}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{S.~Jindariani}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{M.~Jones}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{K.K.~Joo}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{S.Y.~Jun}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{T.R.~Junk}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{T.~Kamon}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{J.~Kang}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{P.E.~Karchin}
\affiliation{Wayne State University, Detroit, Michigan  48201}
\author{Y.~Kato}
\affiliation{Osaka City University, Osaka 588, Japan}
\author{Y.~Kemp}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{R.~Kephart}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{U.~Kerzel}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{V.~Khotilovich}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{B.~Kilminster}
\affiliation{The Ohio State University, Columbus, Ohio  43210}
\author{D.H.~Kim}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{H.S.~Kim}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{J.E.~Kim}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{M.J.~Kim}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{S.B.~Kim}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{S.H.~Kim}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{Y.K.~Kim}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{L.~Kirsch}
\affiliation{Brandeis University, Waltham, Massachusetts 02254}
\author{S.~Klimenko}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{M.~Klute}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{B.~Knuteson}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{B.R.~Ko}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{H.~Kobayashi}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{K.~Kondo}
\affiliation{Waseda University, Tokyo 169, Japan}
\author{D.J.~Kong}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{J.~Konigsberg}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{A.~Korytov}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{A.V.~Kotwal}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{A.~Kovalev}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{A.~Kraan}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{J.~Kraus}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{I.~Kravchenko}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{M.~Kreps}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{J.~Kroll}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{N.~Krumnack}
\affiliation{Baylor University, Waco, Texas  76798}
\author{M.~Kruse}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{V.~Krutelyov}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{S.~E.~Kuhlmann}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{Y.~Kusakabe}
\affiliation{Waseda University, Tokyo 169, Japan}
\author{S.~Kwang}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{A.T.~Laasanen}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{S.~Lai}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{S.~Lami}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{S.~Lammel}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{M.~Lancaster}
\affiliation{University College London, London WC1E 6BT, United Kingdom}
\author{R.L.~Lander}
\affiliation{University of California, Davis, Davis, California  95616}
\author{K.~Lannon}
\affiliation{The Ohio State University, Columbus, Ohio  43210}
\author{A.~Lath}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{G.~Latino}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{I.~Lazzizzera}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{T.~LeCompte}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{J.~Lee}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{J.~Lee}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{Y.J.~Lee}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{S.W.~Lee}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{R.~Lef\`{e}vre}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain}
\author{N.~Leonardo}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{S.~Leone}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{S.~Levy}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{J.D.~Lewis}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{C.~Lin}
\affiliation{Yale University, New Haven, Connecticut 06520}
\author{C.S.~Lin}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{M.~Lindgren}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{E.~Lipeles}
\affiliation{University of California, San Diego, La Jolla, California  92093}
\author{T.M.~Liss}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{A.~Lister}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland}
\author{D.O.~Litvintsev}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{T.~Liu}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{N.S.~Lockyer}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{A.~Loginov}
\affiliation{Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia}
\author{M.~Loreti}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{P.~Loverre}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{R.-S.~Lu}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China}
\author{D.~Lucchesi}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy}
\author{P.~Lujan}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{P.~Lukens}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{G.~Lungu}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{L.~Lyons}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{J.~Lys}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{R.~Lysak}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China}
\author{E.~Lytken}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{P.~Mack}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{D.~MacQueen}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{R.~Madrak}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{K.~Maeshima}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{T.~Maki}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland}
\author{P.~Maksimovic}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218}
\author{S.~Malde}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{G.~Manca}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{F.~Margaroli}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy}
\author{R.~Marginean}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{C.~Marino}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{A.~Martin}
\affiliation{Yale University, New Haven, Connecticut 06520}
\author{V.~Martin}
\affiliation{Northwestern University, Evanston, Illinois  60208}
\author{M.~Mart\'{\i}nez}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain}
\author{T.~Maruyama}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{P.~Mastrandrea}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{H.~Matsunaga}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{M.E.~Mattson}
\affiliation{Wayne State University, Detroit, Michigan  48201}
\author{R.~Mazini}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{P.~Mazzanti}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy}
\author{K.S.~McFarland}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{P.~McIntyre}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{R.~McNulty}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{A.~Mehta}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{S.~Menzemer}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{A.~Menzione}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{P.~Merkel}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{C.~Mesropian}
\affiliation{The Rockefeller University, New York, New York 10021}
\author{A.~Messina}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{M.~von~der~Mey}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{T.~Miao}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{N.~Miladinovic}
\affiliation{Brandeis University, Waltham, Massachusetts 02254}
\author{J.~Miles}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{R.~Miller}
\affiliation{Michigan State University, East Lansing, Michigan  48824}
\author{J.S.~Miller}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{C.~Mills}
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106}
\author{M.~Milnik}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{R.~Miquel}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{A.~Mitra}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China}
\author{G.~Mitselmakher}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{A.~Miyamoto}
\affiliation{High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan}
\author{N.~Moggi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy}
\author{B.~Mohr}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{R.~Moore}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{M.~Morello}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{P.~Movilla~Fernandez}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{J.~M\"ulmenst\"adt}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{A.~Mukherjee}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{Th.~Muller}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{R.~Mumford}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218}
\author{P.~Murat}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{J.~Nachtman}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{J.~Naganoma}
\affiliation{Waseda University, Tokyo 169, Japan}
\author{S.~Nahn}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{I.~Nakano}
\affiliation{Okayama University, Okayama 700-8530, Japan}
\author{A.~Napier}
\affiliation{Tufts University, Medford, Massachusetts 02155}
\author{D.~Naumov}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131}
\author{V.~Necula}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{C.~Neu}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{M.S.~Neubauer}
\affiliation{University of California, San Diego, La Jolla, California  92093}
\author{J.~Nielsen}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{T.~Nigmanov}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260}
\author{L.~Nodulman}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{O.~Norniella}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain}
\author{E.~Nurse}
\affiliation{University College London, London WC1E 6BT, United Kingdom}
\author{T.~Ogawa}
\affiliation{Waseda University, Tokyo 169, Japan}
\author{S.H.~Oh}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{Y.D.~Oh}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{T.~Okusawa}
\affiliation{Osaka City University, Osaka 588, Japan}
\author{R.~Oldeman}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{R.~Orava}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland}
\author{K.~Osterberg}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland}
\author{C.~Pagliarone}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{E.~Palencia}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{R.~Paoletti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{V.~Papadimitriou}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{A.A.~Paramonov}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{B.~Parks}
\affiliation{The Ohio State University, Columbus, Ohio  43210}
\author{S.~Pashapour}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{J.~Patrick}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{G.~Pauletta}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{M.~Paulini}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{C.~Paus}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{D.E.~Pellett}
\affiliation{University of California, Davis, Davis, California  95616}
\author{A.~Penzo}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{T.J.~Phillips}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{G.~Piacentino}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{J.~Piedra}
\affiliation{LPNHE, Universite Pierre et Marie Curie/IN2P3-CNRS, UMR7585, Paris, F-75252 France}
\author{L.~Pinera}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{K.~Pitts}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{C.~Plager}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{L.~Pondrom}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{X.~Portell}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain}
\author{O.~Poukhov}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{N.~Pounder}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{F.~Prakoshyn}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{A.~Pronko}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{J.~Proudfoot}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{F.~Ptohos}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy}
\author{G.~Punzi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{J.~Pursley}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218}
\author{J.~Rademacker}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{A.~Rahaman}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260}
\author{A.~Rakitin}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{S.~Rappoccio}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{F.~Ratnikov}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{B.~Reisert}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{V.~Rekovic}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131}
\author{N.~van~Remortel}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland}
\author{P.~Renton}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{M.~Rescigno}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{S.~Richter}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{F.~Rimondi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy}
\author{L.~Ristori}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{W.J.~Robertson}
\affiliation{Duke University, Durham, North Carolina  27708}
\author{A.~Robson}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}
\author{T.~Rodrigo}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{E.~Rogers}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{S.~Rolli}
\affiliation{Tufts University, Medford, Massachusetts 02155}
\author{R.~Roser}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{M.~Rossi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{R.~Rossin}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{C.~Rott}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{A.~Ruiz}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{J.~Russ}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{V.~Rusu}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{H.~Saarikko}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland}
\author{S.~Sabik}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{A.~Safonov}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{W.K.~Sakumoto}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{G.~Salamanna}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{O.~Salt\'{o}}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain}
\author{D.~Saltzberg}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{C.~Sanchez}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain}
\author{L.~Santi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{S.~Sarkar}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{L.~Sartori}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{K.~Sato}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{P.~Savard}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{A.~Savoy-Navarro}
\affiliation{LPNHE, Universite Pierre et Marie Curie/IN2P3-CNRS, UMR7585, Paris, F-75252 France}
\author{T.~Scheidle}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{P.~Schlabach}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{E.E.~Schmidt}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{M.P.~Schmidt}
\affiliation{Yale University, New Haven, Connecticut 06520}
\author{M.~Schmitt}
\affiliation{Northwestern University, Evanston, Illinois  60208}
\author{T.~Schwarz}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{L.~Scodellaro}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{A.L.~Scott}
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106}
\author{A.~Scribano}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{F.~Scuri}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{A.~Sedov}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{S.~Seidel}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131}
\author{Y.~Seiya}
\affiliation{Osaka City University, Osaka 588, Japan}
\author{A.~Semenov}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{L.~Sexton-Kennedy}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{I.~Sfiligoi}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy}
\author{M.D.~Shapiro}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{T.~Shears}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{P.F.~Shepard}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260}
\author{D.~Sherman}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{M.~Shimojima}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{M.~Shochet}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{Y.~Shon}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
\author{I.~Shreyber}
\affiliation{Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia}
\author{A.~Sidoti}
\affiliation{LPNHE, Universite Pierre et Marie Curie/IN2P3-CNRS, UMR7585, Paris, F-75252 France}
\author{P.~Sinervo}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{A.~Sisakyan}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{J.~Sjolin}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{A.~Skiba}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{A.J.~Slaughter}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{K.~Sliwa}
\affiliation{Tufts University, Medford, Massachusetts 02155}
\author{J.R.~Smith}
\affiliation{University of California, Davis, Davis, California  95616}
\author{F.D.~Snider}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{R.~Snihur}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{M.~Soderberg}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{A.~Soha}
\affiliation{University of California, Davis, Davis, California  95616}
\author{S.~Somalwar}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{V.~Sorin}
\affiliation{Michigan State University, East Lansing, Michigan  48824}
\author{J.~Spalding}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{M.~Spezziga}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{F.~Spinella}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{T.~Spreitzer}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{P.~Squillacioti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{M.~Stanitzki}
\affiliation{Yale University, New Haven, Connecticut 06520}
\author{A.~Staveris-Polykalas}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{R.~St.~Denis}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}
\author{B.~Stelzer}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{O.~Stelzer-Chilton}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom}
\author{D.~Stentz}
\affiliation{Northwestern University, Evanston, Illinois  60208}
\author{J.~Strologas}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131}
\author{D.~Stuart}
\affiliation{University of California, Santa Barbara, Santa Barbara, California 93106}
\author{J.S.~Suh}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{A.~Sukhanov}
\affiliation{University of Florida, Gainesville, Florida  32611}
\author{K.~Sumorok}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{H.~Sun}
\affiliation{Tufts University, Medford, Massachusetts 02155}
\author{T.~Suzuki}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{A.~Taffard}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{R.~Takashima}
\affiliation{Okayama University, Okayama 700-8530, Japan}
\author{Y.~Takeuchi}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{K.~Takikawa}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{M.~Tanaka}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{R.~Tanaka}
\affiliation{Okayama University, Okayama 700-8530, Japan}
\author{N.~Tanimoto}
\affiliation{Okayama University, Okayama 700-8530, Japan}
\author{M.~Tecchio}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{P.K.~Teng}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China}
\author{K.~Terashi}
\affiliation{The Rockefeller University, New York, New York 10021}
\author{S.~Tether}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts  02139}
\author{J.~Thom}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{A.S.~Thompson}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}
\author{E.~Thomson}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{P.~Tipton}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{V.~Tiwari}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15213}
\author{S.~Tkaczyk}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{D.~Toback}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{S.~Tokar}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
\author{K.~Tollefson}
\affiliation{Michigan State University, East Lansing, Michigan  48824}
\author{T.~Tomura}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{D.~Tonelli}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{M.~T\"{o}nnesmann}
\affiliation{Michigan State University, East Lansing, Michigan  48824}
\author{S.~Torre}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy}
\author{D.~Torretta}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{S.~Tourneur}
\affiliation{LPNHE, Universite Pierre et Marie Curie/IN2P3-CNRS, UMR7585, Paris, F-75252 France}
\author{W.~Trischuk}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{R.~Tsuchiya}
\affiliation{Waseda University, Tokyo 169, Japan}
\author{S.~Tsuno}
\affiliation{Okayama University, Okayama 700-8530, Japan}
\author{N.~Turini}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{F.~Ukegawa}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{T.~Unverhau}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}
\author{S.~Uozumi}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
\author{D.~Usynin}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{A.~Vaiciulis}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{S.~Vallecorsa}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland}
\author{A.~Varganov}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{E.~Vataga}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131}
\author{G.~Velev}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{G.~Veramendi}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{V.~Veszpremi}
\affiliation{Purdue University, West Lafayette, Indiana 47907}
\author{R.~Vidal}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{I.~Vila}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{R.~Vilar}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain}
\author{T.~Vine}
\affiliation{University College London, London WC1E 6BT, United Kingdom}
\author{I.~Vollrath}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{I.~Volobouev}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{G.~Volpi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{F.~W\"urthwein}
\affiliation{University of California, San Diego, La Jolla, California  92093}
\author{P.~Wagner}
\affiliation{Texas A\&M University, College Station, Texas 77843}
\author{R.~G.~Wagner}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{R.L.~Wagner}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{W.~Wagner}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{R.~Wallny}
\affiliation{University of California, Los Angeles, Los Angeles, California  90024}
\author{T.~Walter}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
\author{Z.~Wan}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{S.M.~Wang}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China}
\author{A.~Warburton}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{S.~Waschke}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}
\author{D.~Waters}
\affiliation{University College London, London WC1E 6BT, United Kingdom}
\author{W.C.~Wester~III}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{B.~Whitehouse}
\affiliation{Tufts University, Medford, Massachusetts 02155}
\author{D.~Whiteson}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{A.B.~Wicklund}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
\author{E.~Wicklund}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{G.~Williams}
\affiliation{Institute of Particle Physics: McGill University, Montr\'{e}al, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7}
\author{H.H.~Williams}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104}
\author{P.~Wilson}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{B.L.~Winer}
\affiliation{The Ohio State University, Columbus, Ohio  43210}
\author{P.~Wittich}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{S.~Wolbers}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{C.~Wolfe}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{T.~Wright}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
\author{X.~Wu}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland}
\author{S.M.~Wynne}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom}
\author{A.~Yagil}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{K.~Yamamoto}
\affiliation{Osaka City University, Osaka 588, Japan}
\author{J.~Yamaoka}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{T.~Yamashita}
\affiliation{Okayama University, Okayama 700-8530, Japan}
\author{C.~Yang}
\affiliation{Yale University, New Haven, Connecticut 06520}
\author{U.K.~Yang}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{Y.C.~Yang}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{W.M.~Yao}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720}
\author{G.P.~Yeh}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{J.~Yoh}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{K.~Yorita}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637}
\author{T.~Yoshida}
\affiliation{Osaka City University, Osaka 588, Japan}
\author{G.B.~Yu}
\affiliation{University of Rochester, Rochester, New York 14627}
\author{I.~Yu}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea}
\author{S.S.~Yu}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{J.C.~Yun}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510}
\author{L.~Zanello}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome ``La Sapienza," I-00185 Roma, Italy}
\author{A.~Zanetti}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy}
\author{I.~Zaw}
\affiliation{Harvard University, Cambridge, Massachusetts 02138}
\author{F.~Zetti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy}
\author{X.~Zhang}
\affiliation{University of Illinois, Urbana, Illinois 61801}
\author{J.~Zhou}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
\author{S.~Zucchelli}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy}
\collaboration{CDF Collaboration}
\noaffiliation

hwwprl_final.tex
\RequirePackage{lineno}  % LINENO  CTOBS
%=====
%\documentclass[prl,aps,floatfix,showpacs,superscriptaddress,preprint]{revtex4}
%\documentclass[prl,aps,floatfix,showpacs,superscriptaddress,galley]{revtex4}

\documentclass[prl,aps,floatfix,showpacs,superscriptaddress,twocolumn]{revtex4}
%\documentclass[aps,prl,preprint,pslatex]{revtex4} % Distribute to Collaboration CTOBS

\usepackage{graphicx,dcolumn,url}
\usepackage{lineno}
%=====
%\topmargin -35mm
\topmargin -10mm
\def \Pt {{P}_{T}}
\def \Et {{E}_{T}}
\def \met  {\,/\!\!\!\!E_{T}}
\def \ztt {Z\rightarrow\tau\tau}
%
\begin{document} 
%\pagewiselinenumbers
                                            
\title{
% \begin{flushright}
% {\small /CDF/PUB/EXOTIC/CDFR/7991 \\ PRL draft v3 \\ \today\\ }
% \end{flushright}
Search for a Neutral Higgs Boson Decaying to a $W$ Boson Pair in $p\bar{p}$
Collisions at $\sqrt{s} = 1.96$~TeV }
\input{January_2006_Authors.tex}
\author{The CDF Collaboration}

\date{\today}

\begin{abstract}
We present the results of a search for standard model Higgs boson
production with decay to $WW^{*}$, identified through the leptonic
final states $e^{+}e^{-}\bar{\nu} \nu ,~e^{\pm}\mu^{\mp} \bar{\nu}
\nu$ and $\mu^{+}\mu^{-} \bar{\nu} \nu$. This search uses
360 $\rm{pb}^{-1}$ of data collected from $p\bar{p}$ collisions at
$\sqrt{s}$ = 1.96 TeV by the upgraded Collider Detector at Fermilab
(CDF II). We observe no signal excess and set 95\% confidence level
upper limits on the production cross section times branching ratio for
the Higgs boson to $WW^{*}$ or any new scalar particle with similar
decay products. These upper limits range from 5.5 to 3.2 $\rm{pb}$
for Higgs boson masses between 120 and 200 GeV/$c^2$.
\end{abstract}
                           
\pacs{14.70.-e, 13.85.Qk, 13.85.Ni}

\maketitle

%--------------
% introduction
% ------------

The Higgs mechanism is a leading candidate for electroweak symmetry
breaking and consequently for mass generation of the $W$ and $Z$
bosons without violation of local gauge invariance. A manifestation of
this mechanism is the existence of a neutral scalar particle, the
Higgs boson~\cite{higgs}, which has not been observed to date. Its
mass is a free parameter in the standard model (SM), but its couplings
to other particles of known mass are fully specified at tree
level. Direct searches at the CERN $e^{+}e^{-}$ collider (LEP) yielded
a lower limit for the Higgs boson mass of $m_{H}>$~114.4 GeV/$c^{2}$
at 95$\%$ confidence level (C.L.)~\cite{lep2lim}. Precision
electroweak measurements indirectly predict a Higgs boson mass of
$91^{+45}_{-32}$ GeV/$c^{2}$~\cite{ewprec}.

At the Tevatron, the dominant production mechanism for the SM Higgs
boson is gluon-gluon fusion through heavy quark loops. Branching
fractions for the various decay channels of the Higgs boson depend on
its mass. For masses below about $135\,{\rm GeV}/c^2$ the
dominant decay is $H \rightarrow b\bar{b}$, while heavier Higgs bosons
decay predominantly to $WW^\ast$~\cite{xsecnlo}, where $W^{*}$
indicates a $W$ boson that can be off mass-shell. For the $b \bar{b}$
decay mode, the requirement of associated production of the Higgs with
vector bosons ($p\bar{p}\rightarrow WH/ZH$) can greatly improve the
signal purity~\cite{run1_VH}. For the $WW^{*}$ decay mode, the
leptonic decays of $W$ bosons give a clean enough signature that the
inclusive single Higgs production process gives the best search
sensitivity. The next-to-leading order (NLO) production cross
section~\cite{xsecnlo} times branching ratio for a SM Higgs boson,
$\sigma(p\bar{p}\rightarrow H)\times$BR($H\rightarrow WW^{*})$, ranges
from 0.036 to 0.25 $\rm{pb}$ for Higgs masses of 110-200 GeV/$c^2$.
 
This Letter presents the results of a direct search for a Higgs boson in the
channel $gg \rightarrow H \rightarrow WW^{*}\rightarrow
\ell^{+}\nu\ell^{-}\bar{\nu}$ ($\ell=e, \mu, \tau$), identified by
the ``dilepton'' final states $e^{+}e^{-}, e^{\pm}\mu^{\mp}$ or
$\mu^{+}\mu^{-}$. We also include the efficiency for leptonically
decaying taus to e or $\mu$. This is the first search in this channel
by the CDF Collaboration. A similar search in this channel was
recently performed by the D\O\ Collaboration~\cite{hwwd0}. The data
sample used for this analysis was collected with the CDF II detector
at the Fermilab Tevatron between 2002 and 2004, and corresponds to an
integrated luminosity of approximately
360~$\rm{pb}^{-1}$~\cite{lumdetail}. For this integrated luminosity,
the cross section limits we are able to place on Higgs production are
a factor of approximately 10-50 larger than the SM expectation, based
on the NLO calculation.  However, the production cross-section can be
enhanced in extensions to the SM due to new particles e.g., a fourth
generation fermion family~\cite{4gen}, contributing at higher order to
the gluon-gluon fusion Higgs production process.
%This search is also sensitive to
%signals from extensions of the SM; for example, a fourth generation fermion
%family~\cite{4gen} can enhance the gluon-gluon fusion Higgs production
%cross section by an order of magnitude. 


%---------
% detector
% --------

CDF II is a detector with approximate azimuthal and forward-backward
symmetry and it is fully described elsewhere~\cite{cdfdet}. It consists of a
charged-particle tracking system in a 1.4~T magnetic field and
segmented electromagnetic and hadronic calorimeters surrounded by muon
detectors. The electromagnetic and hadronic sampling calorimeters
surrounding the solenoid are used to measure the energy of interacting
particles in the pseudo-rapidity range $|\eta|<3.6$~\cite{eta}. The
calorimeters are divided into projective geometry towers. This
analysis uses both central ($|\eta|<1.1$) and end-plug detectors
($1.2<|\eta|<2.0$) to identify electron candidates. A set of drift
chambers located outside the central hadron calorimeters and another
set behind a 60 cm iron shield help detect muons in the region
$|\eta|<$ 0.6. Additional drift chambers and scintillation counters
detect muons in the region 0.6 $\leq|\eta|\leq 1.0$.

Events used for this analysis are collected using the following
triggers~\cite{trigele, trigplug}: an inclusive central electron
($|\eta|<1.1$) trigger requiring an electron with $E_{T}>$ 18
GeV, an inclusive central muon ($|\eta|<1.0$) trigger
requiring a muon with $p_{T}>$ 18 GeV/$c$, or a trigger for events
with a forward electron (1.2 $\leq|\eta|\leq 2.0$) with $E_{T}>$ 20
GeV and missing transverse energy, $~\met>$ 15 GeV~\cite{met}.

%------------------------
% event selection - llnn
% ----------------------

After the event reconstruction, event selection criteria which retain
high $H\rightarrow WW^{*}$ signal efficiency while minimizing the
effect of background contamination are applied. Some selection
requirements are mass dependent, as the event kinematics and topology
change as functions of $m_{H}$.
%We investigated ten Higgs masses ranging from 110 to
%200~GeV/$c^2$ in 10 GeV/$c^2$ increments.

The selection requires two oppositely charged lepton candidates
consistent with originating from the same vertex, with $p_{T}>$ 20
GeV/$c$ for the trigger lepton and $p_{T}>$ 10 GeV/$c$ for the second
one. The leptons are also required to be isolated in both the
calorimeter and the tracking chamber~\cite{caliso}, and the dilepton
invariant mass $m_{\ell\ell}$ is required to be greater than
$16~{\rm{GeV}}/c^2$, in order to remove events from the
$c\bar{c}$/$b\bar{b}$ resonances.

After removal of events identified as cosmic rays or electrons from photon
conversions~\cite{trigele}, we count the jets~\cite{jetdef} with
$E_{T}>$ 15 GeV and $|\eta|<2.5$. Signal events do not typically have
high-$E_T$ jets in the final state, but can occasionally have
lower-$E_T$ jets from initial state gluon radiation. On the other
hand, $t\bar{t}$ pairs decay primarily to $W^{+}W^{-}b\bar{b}$ and
thus tend to have at least two jets in the final state. This
background is reduced by selecting only events satisfying one of the
following criteria: no jets with $E_{T}>15$ GeV, or only one jet with
$15<E_{T}<55$ GeV, or 2 jets, each with $15<E_{T}< 40$ GeV. Events
with more than two jets with $E_{T}>15$ GeV are also rejected.
 
%The Higgs boson is a spin 0 particle with its decay to WW conserving
%the spin. 

After the selection criteria described above, the dominant surviving
background is Drell-Yan production of $\ell^{+}\ell^{-}$ pairs, which
is suppressed by requiring that $\met>m_{H}/4$. The events with
missing energy due to a mis-measurement of the jet energy, or
$Z\rightarrow\tau\tau$ events with missing energy arising from a
leptonic tau decay, are removed by requiring the azimuthal angle between
the $\met$ and the closest jet or lepton to be at least $20^\circ$, if
$\met<$ 50 GeV. To further reduce the large $Z/\gamma^{*}$ background,
the dilepton invariant mass is required to be $m_{\ell\ell} < m_{H}/2
- 5$ GeV/$c^2$. Finally, the scalar sum of the $p_{T}$ of the two
leptons and the $\met$ is required to be below the Higgs mass.

The kinematic cuts described above exploit the correlations in the $W$
pairs produced by the decay of a Higgs boson and suppress SM $WW$
production. These correlations are due to angular momentum
conservation in the decay of a spin-zero Higgs boson. Since $W$ bosons
decay into left-handed leptons and right-handed anti-leptons, and
since the W bosons in the decay $H\rightarrow WW^{*}$ have opposite
helicities, the final state lepton pairs and also the neutrino pairs
tend to be azimuthally aligned in Higgs decay. This implies that the
signal events tend to have smaller $m_{\ell\ell}$ and azimuthal angle
between leptons ($\Delta \phi$) and larger $\met$, as compared with
production of SM $WW$ pairs. These differences are further exploited
in the final stages of the analysis, when the $\Delta \phi$
distribution of the data is compared with the background and signal
predictions.

%-------------------------
%efficiency and acceptance
%-------------------------

The acceptance for identifying $H\rightarrow WW^{*}\rightarrow
\ell\nu\ell\nu$ events with the above selection criteria is calculated
as a function of the Higgs boson mass using {\sc PYTHIA}~\cite{pythia}
Monte Carlo, after a {\sc GEANT}-based~\cite{geant} simulation of the
CDF detector response. The total acceptance is a product of the
geometric and kinematic acceptance, the lepton identification
efficiencies, the trigger efficiencies, and the topological cut
efficiencies. It does not include the branching fraction of $W$ leptonic
decays. The total acceptance ranges from 3.0$\%$ to 6.5$\%$, depending
on the Higgs mass, and is summarized in
Table~\ref{table:hwwacc}. Approximately 25\% of the expected signal
are $ee$ events, 25\% $\mu\mu$, and 50\% $e\mu$.

\begin{table}[h]
\caption{\label{table:hwwacc}
The branching ratio BR($H\rightarrow$ $WW^{*}$) and the total
acceptance of the signal after all the selection criteria. The total
acceptance is calculated with respect to the number of $p\bar{p}
\rightarrow H \rightarrow WW^{*}\rightarrow
\ell^{+}\nu\ell^{-}\bar{\nu}$  events. 
%We assume here and throughout the paper 
%the PDG~\cite{pdg} values for BR($W\rightarrow \ell\nu$).  
}

\begin{ruledtabular}
\begin{tabular}{lccccc}
%         & \multicolumn{3}{c}{$VH^0$ event efficiencies (\%)}  \\
$m_{H}$ (GeV/$c^2$) & 120 & 140& 160 & 180 &200 \\ \hline
BR($H\rightarrow$ $WW^{*})(\%)$ & 13 &  48 &  90 &  94 &  74  \\
Total acceptance($\%$) & 3.15& 4.56 & 6.47 & 6.41& 5.54\\

\end{tabular}
\end{ruledtabular}
\end{table}


The systematic uncertainty on the acceptance is 6$\%$ resulting from
uncertainties in the modeling of the initial state radiation by {\sc PYTHIA}
(3$\%$), and uncertainties on the gluon parton distribution functions
(4$\%$)~\cite{pdferror}, jet energy scale (1$\%$), track isolation
($<$2$\%$), electron and muon trigger efficiencies($<$1$\%$), and
electron and muon identification efficiencies (2$\%$).
%In addition there is an
%uncertainty on the integrated luminosity (6$\%$), which applies to
%signal and any backgrounds. 
In addition, a 6\% uncertainty on the integrated 
luminosity is applied to the expected number of events for all processes~\cite{lum}.

%------------
% backgrounds
%------------   

\begin{table*}[bth]
\caption{\label{table:grdtable}
 The expected number of signal and SM background events are
 presented. The number of events observed in the data, with the $m_H$
 dependent selection criteria, is also shown. The errors include all systematic effects.}

\begin{ruledtabular}
\begin{tabular}{lccccc}
%         & \multicolumn{3}{c}{$VH^0$ event efficiencies (\%)}  \\
$m_{H}$ (GeV/$c^{2}$) & 120 & 140& 160 & 180 &200 \\ \hline

$WW$           & 5.49 $\pm$ 0.66 &  7.98 $\pm$ 0.96 & 9.79 $\pm$ 1.18&  9.89 $\pm$ 1.19&  9.19 $\pm$ 1.11 \\
$Z/\gamma^{*}$ & 1.63 $\pm$ 0.42 & 1.01 $\pm$ 0.26 & 0.76 $\pm$ 0.20& 0.83 $\pm$ 0.21& 0.96 $\pm$ 0.25\\
$W+\rm{jets}$/$\gamma$  &4.57 $\pm$ 0.90 & 3.49 $\pm$ 0.81& 2.48 $\pm$ 0.69 & 1.70 $\pm$ 0.46& 1.20 $\pm$ 0.37\\
$WZ+ZZ$  & 0.25 $\pm$ 0.03 & 0.37 $\pm$ 0.05 & 0.40 $\pm$ 0.05 & 0.49 $\pm$ 0.07 & 1.16 $\pm$ 0.15 \\
$t\bar{t}$    & 0.12 $\pm$ 0.01  &  0.21 $\pm$ 0.02 & 0.35 $\pm$ 0.04 & 0.46 $\pm$ 0.05 & 0.58 $\pm$ 0.06 \\\hline
Total Background  &  12.06 $\pm$ 1.19&  13.08 $\pm$ 1.28&  13.78 $\pm$ 1.38&  13.37 $\pm$ 1.30&  13.09 $\pm$ 1.21 \\
\hline
$H\rightarrow$ $WW^{*}$ & 0.090 $\pm$ 0.008&  0.32 $\pm$ 0.03& 0.58 $\pm$ 0.05&  0.41 $\pm$ 0.03&  0.20 $\pm$ 0.02 \\\hline
Data  & 7 & 14 & 16 & 19 & 17\\
\end{tabular}
\end{ruledtabular}
\end{table*}


After all selection requirements, the background events come
predominantly from $WW$ pair production (about 70\% of the total for
$m_H = 160$ GeV/$c^2$)~\cite{WW}, $Z/\gamma^{*}$, $W + {\rm jets}$,
and $W+\gamma$. Smaller backgrounds include $WZ$, $ZZ$, and $t\bar{t}$
production. A summary of these contributions as a function of Higgs
mass is given in Table~\ref{table:grdtable}.  The diboson ($WW, WZ,
ZZ$), $Z/\gamma^{*}$  and $t\bar{t}$ backgrounds are determined using {\sc PYTHIA} Monte
Carlo, followed by the CDF II detector simulation. We normalize the
total number of events for these processes to recent theoretical
cross-sections~\cite{wwxsec, ttbarxsec}.
%corresponding to production of a top quark with the mass of 175 GeV/$c^{2}$. 
To estimate the $W+\gamma$ background we use a matrix element
generator~\cite{baur1} and use {\sc PYTHIA} for the initial state QCD
radiation and hadronization.

The background from $W + {\rm jets}$, where a jet or track is
misidentified as a lepton (electron or muon), is determined from the
data and called the ``fake background.'' We first determine the
probability that a jet with a large fraction of its energy deposited
in the electromagnetic calorimeter is misidentified as an electron,
and the probability that a minimum ionizing track is misidentified as
a muon. These probabilities are termed fake rates. The fake rate for
each lepton type is calculated using an average of four inclusive jet
samples (triggered with at least one jet with $E_{T} > $ 20, 50, 70 or
100 GeV). We subtract the contribution from sources of real leptons ($W$ and $Z$ decays)
and parametrize the fake rates as a function of jet transverse energy
(for electrons) or track transverse momentum (for muons). The
background is determined by weighting the jets from a data sample of
$(W \rightarrow \ell\nu) + \rm{jets}$ events by the fake rates.

For data events passing the previously described selection criteria,
we search for an excess of events with small azimuthal angle between
the leptons, $\Delta \phi$. A binned likelihood is used to compare the
azimuthal angle distribution in the data with a combination of
expected distributions from the SM background
processes. Figure~\ref{fig:hww_fig1} shows the $\Delta \phi$
distributions for SM backgrounds, for Higgs masses of 140 and 160
GeV/$c^2$, and for the data. We observe no evidence for a signal over
the SM expectations. We calculate upper limits on the production
cross section times branching ratio, $\sigma_{H} \times {\rm{BR}}(H
\rightarrow WW^\ast$), using a Bayesian procedure. We consider three
components in the data: $H \rightarrow WW^\ast$, SM $WW$, and other SM
processes ($WZ$, $ZZ$, Drell Yan, $W+\rm{jets}$/$\gamma$) labeled as
``other''. The expected number of events in each $\Delta \phi$ bin is
%\begin{widetext}
\begin{eqnarray}
\mu = f_{WW}\cdot n_{WW} + f_{other}\cdot n_{other} + \nonumber \\
 f_{HWW} \cdot (\epsilon \cdot {\cal{L}} \cdot \sigma_{H} \cdot BR(H\rightarrow WW^{*})),\nonumber 
\label{eq1}
\end{eqnarray}
%\end{widetext}
where $f_{WW}$, $f_{other}$ and $f_{HWW}$ represent the expected
fraction of the specified categories of events falling in each $\Delta
\phi$ bin, $n_{WW}$ and $ n_{other}$ are the expected numbers of $WW$ and
non-$WW$ background events, and $\epsilon$, $\cal L$ and $\sigma_{H}$
correspond to efficiency, integrated luminosity, and $H$ production
cross section. A posterior density is obtained by multiplying the
Poisson likelihood function with Gaussian prior densities for the
integrated luminosity, background normalizations, and the signal
efficiency:

\begin{figure*}[tbh]
%\includegraphics[height=6.45cm,width=0.47\columnwidth]{dildphi_140.eps}
%\includegraphics[height=6.45cm,width=0.47\columnwidth]{dildphi_160.eps}
% for PRL
%\includegraphics[height=5.6cm,width=0.9\columnwidth]{dildphi_140.eps}
%\includegraphics[height=5.6cm,width=0.9\columnwidth]{dildphi_160.eps}
%for Collab
\includegraphics[height=7.6cm,width=0.9\columnwidth]{dildphi_140_final.eps}
\includegraphics[height=7.6cm,width=0.9\columnwidth]{dildphi_160_final.eps}
\caption{\label{fig:hww_fig1} 
Dilepton azimuthal distributions for SM backgrounds, $HWW$ signal and data are shown for 
two Higgs masses: 140 GeV/$c^2$ (left figure) and 160 GeV/$c^2$ (right figure).
 }
\end{figure*}

\begin{eqnarray}
L = \prod_{i=1}^{N_{bins}}{\frac{\mu_{i}^{n_{i}} \cdot e^{-\mu_{i}}}{n_{i}!} \times G(n_{WW},\sigma_{WW}) \times G(n_{other},\sigma_{other})} \nonumber \\ 
\times G(\epsilon,\sigma_{\epsilon}) \times G(\cal L,\sigma_{\cal L})\nonumber 
\label{eq2}
\end{eqnarray}
where $n_{i}$ is the number of events observed in the data, and
$G(n,\sigma_n)$ are Gaussian constraints for parameter $n$ with
uncertainty $\sigma_{n}$. The prior density for
$\sigma \times$ BR($H
\rightarrow WW^\ast$) is assumed uniform. The posterior density is then
integrated over all parameters except for $\sigma \times {\rm{BR}}(H\rightarrow WW^\ast$), for which a 95\% confidence level upper limit
is obtained by calculating the $95^{\rm th}$ percentile of the
resulting distribution.

\begin{figure}[htb]
%\includegraphics[height=7.45cm,width=0.8\columnwidth]{plot_hwwlimits_v2.eps}
%for PRL
%\includegraphics[height=5.5cm,width=0.95\columnwidth]{plot_hwwlimits_v3.eps}
%for Collab
\includegraphics[height=7.5cm,width=0.95\columnwidth]{plot_hwwlimits_final.eps}
\caption{\label{fig:vh_fig3}
Summary of the Run II CDF $95\%$ confidence level upper limits on
$\sigma(p\bar{p} \rightarrow H)\times$BR($H\rightarrow WW^{*}$). Shown
for comparison are the standard model prediction, the 4th generation
model prediction~\cite{4gen} and the region excluded by the LEP experiments. The prediction for the 4th generation model assumes that 4th family fermions have a mass $m_{4}$ = 200~GeV/$c^{2}$.}
\end{figure}

The expected and observed upper limits on the cross section times
branching ratio, $\sigma \times {\rm{BR}}(H\rightarrow WW^\ast$), for
different Higgs masses are shown in Table
\ref{table:limits}. The expected limits are calculated using 1000 
simulated experiments, assuming no signal, for each Higgs mass. The
median value of the limits obtained from these experiments is chosen
as the {\it a priori} upper limit.


\begin{table}[h]
\caption{\label{table:limits}
 The expected and observed 95$\%$ C.L. 
limits on $\sigma(p\bar{p}\rightarrow H)\times {\rm{BR}}(H\rightarrow
WW^{*})$. }

\begin{ruledtabular}
\begin{tabular}{lccccc}
%         & \multicolumn{3}{c}{$VH^0$ event efficiencies (\%)}  \\
$m_{H}$ (GeV/$c^2$) & 120 & 140& 160 & 180 &200 \\ \hline
Expected Limits ($\rm{pb}$)  &  7.1&  4.8&  3.5&  3.4  &  4.0\\ 
Observed Limits ($\rm{pb}$)  &   4.5 & 4.6 &  3.2 &  4.3 &  5.2\\

\end{tabular}
\end{ruledtabular}
\end{table}

%---------
% results
%--------

%-----------
%conclusion
%----------

In conclusion, observing no signal in the direct search for $H
\rightarrow WW^\ast$, with the subsequent decay of the $W$ bosons to
leptons, we have set mass dependent limits at 95\% C.L. on
$\sigma(p\bar{p}\rightarrow H)\times{\rm{BR}}(H\rightarrow
WW^{*})$. This search is potentially sensitive to other new physics
models such as the example in Figure~\ref{fig:vh_fig3}.

%-----------
%Acknowledgments
%-----------

We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A.P. Sloan Foundation; the Bundesministerium f\"ur Bildung und Forschung, Germany; the Korean Science and Engineering Foundation and the Korean Research Foundation; the Particle Physics and Astronomy Research Council and the Royal Society, UK; the Russian Foundation for Basic Research; the Comisi\'on Interministerial de Ciencia y Tecnolog\'{\i}a, Spain; in part by the European Community's Human Potential Programme under contract HPRN-CT-2002-00292; and the Academy of Finland.

%-----------------------
%  Bibliography
%-----------------------
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  A. Abulencia {\it et al.}, Phys. Rev. Lett. 96, 081803 (2006).

\bibitem{hwwd0} V. M. Abrazov {\it et al.} (D\O\ Collaboration), Phys. Rev. Lett. 96, 011801 (2006).

\bibitem{lumdetail} The integrated luminosities for $ee$, $e\mu$ and $\mu\mu$ are $363 \pm 22$, 
$356 \pm 21$, and $364 \pm 22~{\rm{pb}^{-1}}$ respectively. The differences
for the various channels are due to different detector quality
requirements.

\bibitem{4gen}E. Arik {\it et al.}, Phys. Rev. D{\bf 66}, 033003 (2002); E. Arik  {\it et al.}, hep-ph/0502050.

\bibitem{cdfdet}D. Acosta {\it et al.} (CDF Collaboration), Phys. Rev. D{\bf 71}, 032001 (2005).

\bibitem{eta} In the CDF coordinate system, $\theta$ and $\phi$ are the 
polar and azimuthal angles, respectively, with respect to the proton
beam direction ($z$ axis). The pseudorapidity $\eta$ is defined as
$-\ln \tan(\theta/2)$.  The transverse momentum of a particle is $p_{T}
= p \sin\theta$.  The analogous quantity using calorimeter energies,
defined as $E_{T} = E \sin\theta$, is called transverse energy.  

%\bibitem{lum}D. Acosta {\it et al.} Nucl.Instrum. Meth. {\bf A 461}, 540 (2001). 

%\bibitem{CDFtrig}The CDF II Detector Technical Design Report, FERMILAB-Pub-96/390-E.

\bibitem{trigele} D. Acosta {\it et al.} (CDF Collaboration), hep-ex/0508029, submitted to Phys. Rev. D.

\bibitem{trigplug} D. Acosta {\it et al.} (CDF Collaboration), PRD-RC 71, 051104 (2005).

\bibitem{met}
The missing transverse energy, $\met$, is defined as $|-\sum \Et^i
\,\hat{n}_i|$, where $\hat{n}_i$ is the unit vector in the transverse
plane pointing from the interaction point to the energy deposition in
calorimeter cell $i$.

\bibitem{caliso} The calorimeter isolation $I_{cal}$ is defined as the extra energy deposited 
in the calorimeter cone of radius $\Delta R=\sqrt{{\Delta \phi}^{2}+
{\Delta \eta}^{2}}= 0.4$ around the lepton cluster. The $I_{cal}$ is
required to be less than 10 $\%$ of the lepton $E_{T}$. 
  The track isolation $I_{trk}$ is defined as the sum $p_T$ of all the tracks in a cone of radius 
$\Delta R = 0.4$ around the lepton 
candidate track, but excluding it. The $I_{trk}$ is required to be less than 10$\%$ of the lepton track $p_{T}$. 

\bibitem{jetdef} A jet is defined as a
cluster of calorimeter towers above an energy threshold of 3 GeV,
within fixed radius $\Delta R= 0.4$. The jet $E_{T}$ is corrected for
the calorimeter response and multiple interactions. See: G. C. Blazer
and B. L. Flaugher, Ann. Rev. of Nucl. and Part. Sci. Vol 49 (1999).

\bibitem{pythia}T. Sj\"{o}strand {\it et al.}, Comput. Phys. Commun. {\bf 135}, 238 (2001). We use {\sc PYTHIA} V6.2.

\bibitem{geant} R. Brun and F. Carminati, CERN Program Library Long Writeup W5013, 1993 
(unpublished).

%\bibitem{pdg} S. Eidelman {\it et al.}, Phys. Lett. B {\bf 592}, 1 (2004).

\bibitem{pdferror} We compared the acceptances obtained using MRST 72 and 75 PDF sets, 
corresponding to $\alpha_{s}$ = 0.1175 and 0.1125. Also we
include the effect of the eigenvector variations around the fit
minima, using CTEQ6M PDF sets.

\bibitem{lum} S. Klimenko, J. Konigsberg, and T. Liss, FERMILAB-FN-0741 (2003); D. Acosta {\it et al.}, Nucl.Instrum. Methods {\bf A 494}, 57 (2002). 

\bibitem{WW}D. Acosta {\it et al.} (CDF Collaboration), Phys. Rev. Lett. 94, 211801 (2005).
\bibitem{wwxsec}J. M. Campbell, R. K. Ellis, Phys. Rev. D {\bf60}, 113006 (1999).
\bibitem{ttbarxsec}M. Cacciari {\it et al.}, hep-ph/0303085; N. Kidonakis and R. Vogt, 
Phys. Rev. D {\bf 68}, 114014 (2003).

%\bibitem{baur1} U. Baur and E. L. Berger, Phys. Rev. D{\bf 41}, 1476 (1990); U. Baur and E. L. Berger, Phys. Rev. D{\bf 47}, 4889 (1993).

\bibitem{baur1} U. Baur and E. L. Berger, Phys. Rev. D{\bf 47}, 4889 (1993).

%\bibitem{higgsstudy} L.~Babukhadia {\it et al.} (CDF and D\O\ Higgs Sensitivity Working 
% Group), FERMILAB-PUB-03-320-E (2003); 
%C.~Neu  (CDF collaboration), FERMILAB-CONF-04-027-E (2004).

\end{thebibliography}
                                                     
\end{document}

hep-ex0605124.extracted_bib
\begin{thebibliography}{99}

\bibitem{higgs} P. W. Higgs, Phys. Lett. {\bf 12}, 132 (1964).
\bibitem{lep2lim} R. Barate {\it et al.} (ALEPH Collaboration), Phys. Lett. B {\bf 565}, 61 (2003).

\bibitem{ewprec}J. Alcaraz {\it et al.}, hep-ex/0511027 (2005).
 
\bibitem{xsecnlo} A. Djouadi, J. Kalinowski and M. Spira, Comput. Phys. Commun.
 {\bf 108}, 56 (1998); S. Catani, D. de Florian, M. Grazzini, P. Nason, hep-ph/0306211.

\bibitem{run1_VH} D. Acosta {\it et al.} (CDF Collaboration), Phys. Rev. Lett. 95, 051801 (2005);
  A. Abulencia {\it et al.}, Phys. Rev. Lett. 96, 081803 (2006).

\bibitem{hwwd0} V. M. Abrazov {\it et al.} (D\O\ Collaboration), Phys. Rev. Lett. 96, 011801 (2006).

\bibitem{lumdetail} The integrated luminosities for $ee$, $e\mu$ and $\mu\mu$ are $363 \pm 22$, 
$356 \pm 21$, and $364 \pm 22~{\rm{pb}^{-1}}$ respectively. The differences
for the various channels are due to different detector quality
requirements.

\bibitem{4gen}E. Arik {\it et al.}, Phys. Rev. D{\bf 66}, 033003 (2002); E. Arik  {\it et al.}, hep-ph/0502050.

\bibitem{cdfdet}D. Acosta {\it et al.} (CDF Collaboration), Phys. Rev. D{\bf 71}, 032001 (2005).

\bibitem{eta} In the CDF coordinate system, $\theta$ and $\phi$ are the 
polar and azimuthal angles, respectively, with respect to the proton
beam direction ($z$ axis). The pseudorapidity $\eta$ is defined as
$-\ln \tan(\theta/2)$.  The transverse momentum of a particle is $p_{T}
= p \sin\theta$.  The analogous quantity using calorimeter energies,
defined as $E_{T} = E \sin\theta$, is called transverse energy.  

%\bibitem{lum}D. Acosta {\it et al.} Nucl.Instrum. Meth. {\bf A 461}, 540 (2001). 

%\bibitem{CDFtrig}The CDF II Detector Technical Design Report, FERMILAB-Pub-96/390-E.

\bibitem{trigele} D. Acosta {\it et al.} (CDF Collaboration), hep-ex/0508029, submitted to Phys. Rev. D.

\bibitem{trigplug} D. Acosta {\it et al.} (CDF Collaboration), PRD-RC 71, 051104 (2005).

\bibitem{met}
The missing transverse energy, $\met$, is defined as $|-\sum \Et^i
\,\hat{n}_i|$, where $\hat{n}_i$ is the unit vector in the transverse
plane pointing from the interaction point to the energy deposition in
calorimeter cell $i$.

\bibitem{caliso} The calorimeter isolation $I_{cal}$ is defined as the extra energy deposited 
in the calorimeter cone of radius $\Delta R=\sqrt{{\Delta \phi}^{2}+
{\Delta \eta}^{2}}= 0.4$ around the lepton cluster. The $I_{cal}$ is
required to be less than 10 $\%$ of the lepton $E_{T}$. 
  The track isolation $I_{trk}$ is defined as the sum $p_T$ of all the tracks in a cone of radius 
$\Delta R = 0.4$ around the lepton 
candidate track, but excluding it. The $I_{trk}$ is required to be less than 10$\%$ of the lepton track $p_{T}$. 

\bibitem{jetdef} A jet is defined as a
cluster of calorimeter towers above an energy threshold of 3 GeV,
within fixed radius $\Delta R= 0.4$. The jet $E_{T}$ is corrected for
the calorimeter response and multiple interactions. See: G. C. Blazer
and B. L. Flaugher, Ann. Rev. of Nucl. and Part. Sci. Vol 49 (1999).

\bibitem{pythia}T. Sj\"{o}strand {\it et al.}, Comput. Phys. Commun. {\bf 135}, 238 (2001). We use {\sc PYTHIA} V6.2.

\bibitem{geant} R. Brun and F. Carminati, CERN Program Library Long Writeup W5013, 1993 
(unpublished).

%\bibitem{pdg} S. Eidelman {\it et al.}, Phys. Lett. B {\bf 592}, 1 (2004).

\bibitem{pdferror} We compared the acceptances obtained using MRST 72 and 75 PDF sets, 
corresponding to $\alpha_{s}$ = 0.1175 and 0.1125. Also we
include the effect of the eigenvector variations around the fit
minima, using CTEQ6M PDF sets.

\bibitem{lum} S. Klimenko, J. Konigsberg, and T. Liss, FERMILAB-FN-0741 (2003); D. Acosta {\it et al.}, Nucl.Instrum. Methods {\bf A 494}, 57 (2002). 

\bibitem{WW}D. Acosta {\it et al.} (CDF Collaboration), Phys. Rev. Lett. 94, 211801 (2005).
\bibitem{wwxsec}J. M. Campbell, R. K. Ellis, Phys. Rev. D {\bf60}, 113006 (1999).
\bibitem{ttbarxsec}M. Cacciari {\it et al.}, hep-ph/0303085; N. Kidonakis and R. Vogt, 
Phys. Rev. D {\bf 68}, 114014 (2003).

%\bibitem{baur1} U. Baur and E. L. Berger, Phys. Rev. D{\bf 41}, 1476 (1990); U. Baur and E. L. Berger, Phys. Rev. D{\bf 47}, 4889 (1993).

\bibitem{baur1} U. Baur and E. L. Berger, Phys. Rev. D{\bf 47}, 4889 (1993).

%\bibitem{higgsstudy} L.~Babukhadia {\it et al.} (CDF and D\O\ Higgs Sensitivity Working 
% Group), FERMILAB-PUB-03-320-E (2003); 
%C.~Neu  (CDF collaboration), FERMILAB-CONF-04-027-E (2004).

\end{thebibliography}