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

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

2004-11-29

arxiv.org/abs/hep-ph/0411379v3

Nucl.Phys.B718:247-275,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, 18 figures, 1 table, muon-pair production channel considered, angle cut introduced, to appear in Nucl. Phys. B

Scientific paper

10.1016/j.nuclphysb.2005.04.024

We study CP-violating phenomena in the production, mixing and decay of a coupled system of CP-violating neutral Higgs bosons at \gamma \gamma colliders, 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 \mu^+ \mu^-, \tau^+ \tau^-, {\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 \tan\beta >~ 5(30) and large (small) charged Higgs-boson masses.

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