SUSY and the Electroweak Phase Transition

Details SUSY and the Electroweak Phase Transition SUSY and the Electroweak Phase Transition

1996-12-12

arxiv.org/abs/hep-ph/9612346v1

Phys.Lett. B406 (1997) 60-65

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 6 figures, uses epsf

Scientific paper

10.1016/S0370-2693(97)00663-1

We analyze the effective 3 dimensional theory previously constructed for the MSSM and multi-Higgs models to determine the regions of parameter space in which the electroweak phase transition is sufficiently strong for a $B+L$ asymmetry to survive in the low temperature phase. We find that the inclusion of all supersymmetric scalars and all 1-loop corrections has the effect of enhancing the strength of the phase transition. Without a light stop or extension of the MSSM the phase transition is sufficiently first order only if the lightest Higgs mass $M_{h}\lsi 70$ GeV and $tan\beta\lsi 1.75$.

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