Baryon Asymmetry from a Two Stage Electroweak Phase Transition ?

Details Baryon Asymmetry from a Two Stage Electroweak Phase Transition ? Baryon Asymmetry from a Two Stage Electroweak Phase Transition ?

1994-04-15

arxiv.org/abs/hep-ph/9404272v1

Z.Phys. C64 (1994) 105-110

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 p., 5 figs included (to be transf. into Fig_.eps files), HD-THEP-94-08

Scientific paper

10.1007/BF01557241

We investigate an extension of the standard model with a second Higgs doublet, showing a two stage phase transition. Wash-out of a baryon asymmetry after the phase transition can be easily avoided in this class of models. B+L transitions are more strongly suppressed in the intermediate phase than in the high temperature symmetric phase,however. Therefore, it becomes more difficult if not impossible to generate a sufficient baryon asymmetry during the phase transition.

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