SUSY and the electroweak phase transition

Glennys R. Farrar; Marta Losada

doi:10.1016/S0370-2693(97)00663-1

SUSY and the electroweak phase transition

Glennys R. Farrar, Marta Losada

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We analyze the effective three-dimensional theory previously constructed for the MSSM and multi-Higgs models to determine the regions of parameter space in which the electroweak phase transition is sufficiently strong for a B + L asymmetry to survive in the low-temperature phase. We find that the inclusion of all supersymmetric scalars and all one-loop corrections has the effect of enhancing the strength of the phase transition. Without a light stop or extension of the MSSM the phase transition is sufficiently first order only if the lightest Higgs mass M_h ≲ 70 GeV and tan β ≲ 1.75.

Original language	English (US)
Pages (from-to)	60-65
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	406
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(97)00663-1
State	Published - Jul 31 1997

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(97)00663-1

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abstract = "We analyze the effective three-dimensional theory previously constructed for the MSSM and multi-Higgs models to determine the regions of parameter space in which the electroweak phase transition is sufficiently strong for a B + L asymmetry to survive in the low-temperature phase. We find that the inclusion of all supersymmetric scalars and all one-loop corrections has the effect of enhancing the strength of the phase transition. Without a light stop or extension of the MSSM the phase transition is sufficiently first order only if the lightest Higgs mass Mh ≲ 70 GeV and tan β ≲ 1.75.",

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AU - Losada, Marta

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AB - We analyze the effective three-dimensional theory previously constructed for the MSSM and multi-Higgs models to determine the regions of parameter space in which the electroweak phase transition is sufficiently strong for a B + L asymmetry to survive in the low-temperature phase. We find that the inclusion of all supersymmetric scalars and all one-loop corrections has the effect of enhancing the strength of the phase transition. Without a light stop or extension of the MSSM the phase transition is sufficiently first order only if the lightest Higgs mass Mh ≲ 70 GeV and tan β ≲ 1.75.

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SUSY and the electroweak phase transition

Abstract

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