Singlets and the Electroweak Phase Transition

Details Singlets and the Electroweak Phase Transition Singlets and the Electroweak Phase Transition

1999-02-11

arxiv.org/abs/hep-ph/9902325v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 figures. Presented at Strong and Electroweak Matter '98, Copenhagen, Denmark, Dec. 2-5, 1998

Scientific paper

Singlet extensions of the Standard Model (SM) allow for a strongly first order electroweak phase transition, because of trilinear terms in the tree-level potential. We present a systematic procedure to study the parameter space of the Next-to-Minimal Supersymmetric SM (NMSSM). We find that this model is consistent with electroweak baryogenesis for a wide range of parameters, allowing Higgs masses up to at least 115 GeV.

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