CP Violation, Higgs Couplings, and Supersymmetry

Details CP Violation, Higgs Couplings, and Supersymmetry CP Violation, Higgs Couplings, and Supersymmetry

1998-04-21

arxiv.org/abs/hep-ph/9804355v2

Phys.Rev. D59 (1999) 016004

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages LaTeX, 4 figures (some typos fixed, discussion clarified)

Scientific paper

10.1103/PhysRevD.59.016004

Supersymmetric extensions of the standard model generically contain additional sources of CP violation. We discuss how at one loop a potentially large CP violating coupling of the lightest Higgs, h^0, to leptons is induced in the minimal supersymmetric standard model (MSSM). The CP violating couplings of h^0 in extensions of the MSSM, such as the next-to-minimal supersymmetric standard model (NMSSM) are also considered. We indicate how this CP violation might be observed; in particular a polarization-dependent production asymmetry, in the context of a muon collider, provides a means to access this coupling cleanly. In the MSSM, existing limits on the electric dipole moment (EDM) of the electron, coupled with standard universality assumptions, severly constrains any such signal. Nevertheless, extensions of the MSSM, such as the NMSSM, allow CP-violating signals as large as 100%.

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