The Electroweak Phase Transition in the MSSM

Details The Electroweak Phase Transition in the MSSM The Electroweak Phase Transition in the MSSM

1998-08-27

arxiv.org/abs/hep-ph/9808439v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures. Talk given at the Quarks98 conference in Suzdal, Russia, May 1998

Scientific paper

The construction of an effective 3D theory at high temperatures for the MSSM as a model of electroweak baryogenesis is discussed. The analysis for a single light scalar field shows, that given the experimental constraints, there is no value of the Higgs mass for which a sufficiently first-order phase transition is obtained. A precise determination of the 3D parameters of the effective theory for the case of a light right-handed stop allows us to obtain an upper bound on the masses of the lightest Higgs and right-handed stop using the two-loop effective potential. A two-stage phase transition persists for a small range of values of $m_{\tilde{t}_{R}}$.

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