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Particles and Fields


Eur. Phys. J. C 25, 307-313 (2002)
DOI: 10.1007/s10052-002-0997-8

Supersymmetric Higgs boson decays in the MSSM with explicit CP violation

S.Y. Choi1, M. Drees2, J.S. Lee3 and J. Song4

1  Department of Physics, Chonbuk National University, Chonju 561-756, Korea
2  Physik Department, TU München, James Franck Str., 85748 Garching, Germany
3  Theory Group, KEK, Tsukuba, Ibaraki 305-0801, Japan
4  School of Physics, Korea Institute for Advanced Study, Seoul 130-012, Korea

(Received: 18 April 2002 / Published online: 26 July 2002 )

Abstract
Decays into neutralinos and charginos are among the most accessible supersymmetric decay modes of Higgs particles in most supersymmetric extensions of the standard model. In the presence of explicitly CP violating phases in the soft breaking sector of the theory, the couplings of Higgs bosons to charginos and neutralinos are in general complex. Based on a specific benchmark scenario of CP violation, we analyze the phenomenological impact of explicit CP violation in the minimal supersymmetric standard model on these Higgs boson decays. The presence of CP violating phases could be confirmed either directly through the measurement of a CP odd polarization asymmetry of the produced charginos and neutralinos, or through the dependence of CP even quantities (branching ratios and masses) on these phases.



© Società Italiana di Fisica, Springer-Verlag 2002