Charge asymmetry in two-Higgs doublet models

Details Charge asymmetry in two-Higgs doublet models Charge asymmetry in two-Higgs doublet models

1998-12-31

arxiv.org/abs/hep-ph/9812535v3

Phys.Lett.B472:119,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, LaTeX file, 5 eps figures included using epsfig macro. Major revision

Scientific paper

10.1016/S0370-2693(99)01400-8

We discuss the features of a two-Higgs doublet model exhibiting a two stage phase transition. At finite temperatures electric charge violating stationary points are developed. In conjunction with {\em CP} violation in the Higgs or the Yukawa sector, the phase transition to the charge conserving vacuum, generates a net charge asymmetry $\Delta Q$, in the presence of heavy leptons, which may be well above the astrophysical bounds put on $\Delta Q$ unless the heavy leptons are sufficiently massive. This type of transition may be of relevance for supersymmetric extensions of the Standard Model, since it shares the same features, namely two Higgs doublets and similar {\em CP} violating sources.

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