### 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 |

State | Published - Jul 31 1997 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics*,

*406*(1-2), 60-65.

**SUSY and the electroweak phase transition.** / Farrar, Glennys R.; Losada, Marta.

Research output: Contribution to journal › Article

*Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics*, vol. 406, no. 1-2, pp. 60-65.

}

TY - JOUR

T1 - SUSY and the electroweak phase transition

AU - Farrar, Glennys R.

AU - Losada, Marta

PY - 1997/7/31

Y1 - 1997/7/31

N2 - 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.

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.

UR - http://www.scopus.com/inward/record.url?scp=0041155244&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0041155244&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0041155244

VL - 406

SP - 60

EP - 65

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1-2

ER -