  Muon colliders offer special opportunities to discover and study new physics.
With the high intensity source of muons at the front end, orders of magnitude
improvements would be realized in searches for rare muon processes, in deep
inelastic muon and neutrino scattering experiments, and in long-baseline
neutrino oscillation experiments. At a 100 to 500 GeV muon collider, neutral
Higgs boson (or techni-particle) masses, widths and couplings could be
precisely measured via s-channel production. Also, threshold cross-section
studies of W+ W-, t t-bar, Zh and supersymmetric particle pairs would precisely
determine the corrresponding masses and test supersymmetric radiative
corrections. At the high energy frontier a 3 to 4 TeV muon collider is ideally
suited for the study of scalar supersymmetric particles and extra Z-bosons or
strong WW scattering.
