Physics of Higgs Factories
V. Barger, M. Berger, J. F. Gunion, T. Han
Abstract
We outline the unique role of a muon collider as a Higgs factory for Higgs boson resonance production in the s-channel. Physics examples include: the precision measurements of the Higgs mass and total width, and the resulting ability to discriminate between the SM-like Higgs bosons of different models such as between a light SM Higgs boson and the light Higgs boson of the MSSM; the determination of the spin and coupling via the h τtau decay mode; differentiation of two nearly degenerate heavy Higgs bosons by an energy scan; and the ability to explore a general extended Higgs sector, possibly with CP-violating couplings. The muon collider Higgs factory could perform measurements that would be highly complementary to Higgs studies at the LHC and LC; it would be likely to play a very crucial role in fully understanding the Higgs sector.
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