Electroweak Baryogenesis in Supersymmetric Variants

Details Electroweak Baryogenesis in Supersymmetric Variants Electroweak Baryogenesis in Supersymmetric Variants

2001-02-05

arxiv.org/abs/hep-ph/0102043v1

Nucl.Phys.Proc.Suppl. 101 (2001) 339-346

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 6 figures, SUSY30 conference proceedings

Scientific paper

10.1016/S0920-5632(01)01519-5

We argue that the creation of a baryon asymmetry in the early universe is an intriguing case where several aspects of ``Beyond'' physics are needed. We then concentrate on baryogenesis in a strong first-order phase transition and discuss that supersymmetric variants of the electroweak theory (MSSM and some version of NMSSM) rather naturally provide the necessary ingredients. The charginos and the stops play a prominent role. We present CP-violating dispersion relations in the chargino sector and show results of a concrete model calculation for the asymmetry production based on quasi-classical Boltzmann transport equations and sphaleron transitions in the hot electroweak phase.

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