Electroweak phase transition and Higgs self-couplings in the two-Higgs-doublet model

Details Electroweak phase transition and Higgs self-couplings in the two-Higgs-doublet model Electroweak phase transition and Higgs self-couplings in the two-Higgs-doublet model

2005-02-13

arxiv.org/abs/hep-ph/0502116v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure

Scientific paper

We calculate both the cubic and the quartic self-couplings of the lighter scalar Higgs boson without assuming the decoupling limit in the two-Higgs-doublet model (THDM). In some regions of parameter space of the THDM where the electroweak phase transition is strongly first order, it is possible that the quartic self-coupling of the lighter scalar Higgs boson might be deviated by at least 40 % from the standard model prediction.

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