  A search is presented for a high mass neutral particle that decays directly
to the emu final state. The data sample was recorded by the ATLAS detector in
sqrt(s) = 7 TeV pp collisions at the LHC from March to June 2011 and
corresponds to an integrated luminosity of 1.07 fb^-1. The data are found to be
consistent with the Standard Model background. The high emu mass region is used
to set 95% confidence level upper limits on the production of two possible new
physics processes: tau sneutrinos in an R-parity violating supersymmetric model
and Z'-like vector bosons in a lepton flavor violating model.
