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Resonant CP Violation in MSSM Higgs Production and Decay at $γγ$ Colliders

John Ellis·Jae Sik Lee·Apostolos Pilaftsis
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Abstract

We study CP-violating phenomena in the production, mixing and decay of a coupled system of CP-violating neutral Higgs bosons at γγcolliders, assuming a Minimal Supersymmetric Standard Model (MSSM) Higgs sector in which CP violation is radiatively induced by phases in the soft supersymmetry-breaking gaugino masses and third-generation trilinear squark couplings. We discuss CP asymmetries in the production and decays of μ^+ μ^-, τ^+ τ^-, {\bar b} b and {\bar t} t pairs. We find large asymmetries when two (or all three) neutral Higgs bosons are nearly degenerate with mass differences comparable to their decay widths, as happens naturally in the CP-violating MSSM for values of \tanβ>~ 5(30) and large (small) charged Higgs-boson masses.

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John Ellis, Jae Sik Lee, Apostolos Pilaftsis. 2005-04-15. Resonant CP Violation in MSSM Higgs Production and Decay at $γγ$ Colliders. https://doi.org/10.1016/j.nuclphysb.2005.04.024

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