On the Spontaneous CP Breaking in the Higgs Sector of the Minimal Supersymmetric Standard Model

Details On the Spontaneous CP Breaking in the Higgs Sector of the Minimal Supersymmetric Standard Model On the Spontaneous CP Breaking in the Higgs Sector of the Minimal Supersymmetric Standard Model

1993-08-21

arxiv.org/abs/hep-ph/9308315v1

Phys.Lett.B319:505-512,1993

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LATEX, 3 appended postscript figures, IEM-FT-76/93

Scientific paper

10.1016/0370-2693(93)91758-F

We revise a recently proposed mechanism for spontaneous CP breaking at finite temperature in the Higgs sector of the Minimal Supersymmetric Standard Model, based on the contribution of squarks, charginos and neutralinos to the one-loop effective potential. We have included plasma effects for all bosons and added the contribution of neutral scalar and charged Higgses. While the former have little effect, the latter provides very strong extra constraints on the parameter space and change drastically the previous results. We find that CP can be spontaneously broken at the critical temperature of the electroweak phase transition without any fine-tuning in the parameter space.

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