Electroweak Baryogenesis: Concrete in a SUSY Model with a Gauge Singlet

Details Electroweak Baryogenesis: Concrete in a SUSY Model with a Gauge Singlet Electroweak Baryogenesis: Concrete in a SUSY Model with a Gauge Singlet

2000-03-13

arxiv.org/abs/hep-ph/0003122v2

Nucl.Phys.B606:183-230,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

46 pages, LaTeX, 11 figures, discussion of source terms and transport equations modified, version to appear in Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(01)00250-4

SUSY models with a gauge singlet easily allow for a strong first order electroweak phase transition (EWPT) if the vevs of the singlet and Higgs fields are of comparable size. We discuss the profile of the stationary expanding bubble wall and CP-violation in the effective potential, in particular transitional CP-violation inside the bubble wall during the EWPT. The dispersion relations for charginos contain CP-violating terms in the WKB approximation. These enter as source terms in the Boltzmann equations for the (particle--antiparticle) chemical potentials and fuel the creation of a baryon asymmetry through the weak sphaleron in the hot phase. This is worked out for concrete parameters.

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