Electroweak Baryogenesis with dimension-6 Higgs interactions

Details Electroweak Baryogenesis with dimension-6 Higgs interactions Electroweak Baryogenesis with dimension-6 Higgs interactions

2005-04-25

arxiv.org/abs/hep-ph/0504222v1

Surveys High Energ.Phys. 19 (2004) 193-201

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures, Talk given at the 8th International Moscow School of Physics

Scientific paper

We present the computation of the baryon asymmetry in the SM amplified by dimension-6 Higgs interactions using the WKB approximation. Analyzing the one-loop potential it turns out that the phase transition is strongly first order in a wide range of the parameters. It is ensured not to wash out the net baryon number gained previously even for Higgs masses up to at least 170 GeV. In addition dimension-6 operators induce new sources of CP violation. Novel source terms which enhance the generated baryon asymmetry emerge in the transport equations. This model predicts a baryon to entropy ratio close to the observed value for a large part of the parameter space.

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