  This note summarizes many detailed physics studies done by the ATLAS and CMS
Collaborations for the LHC, concentrating on processes involving the production
of high mass states. These studies show that the LHC should be able to
elucidate the mechanism of electroweak symmetry breaking and to study a variety
of other topics related to physics at the TeV scale. In particular, a Higgs
boson with couplings given by the Standard Model is observable in several
channels over the full range of allowed masses. Its mass and some of its
couplings will be determined. If supersymmetry is relevant to electroweak
interactions, it will be discovered and the properties of many supersymmetric
particles elucidated. Other new physics, such as the existence of massive gauge
bosons and extra dimensions can be searched for extending existing limits by an
order of magnitude or more.
