The 2-loop MSSM finite temperature effective potential with stop condensation

1996/12/15 by D. Bodeker, P. John, M. Laine +1 · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1016/s0550-3213(97)00252-6

published as Nucl.Phys. B497 (1997) 387-414 · 30 pages, 7 figures

arxiv created 1996/12/15 · arxiv updated 2009/11/30

Abstract

We calculate the finite temperature 2-loop effective potential in the MSSM with stop condensation, using a 3-dimensional effective theory. We find that in a part of the parameter space, a two-stage electroweak phase transition appears possible. The first stage would be the formation of a stop condensate, and the second stage is the transition to the standard electroweak minimum. The two-stage transition could significantly relax the baryon erasure bounds, but the parameter space allowing it (m_H \lsim 100 GeV, m_tR ∼ 155-160 GeV) is not very large. We estimate the reliability of our results using renormalization scale and gauge dependence. Finally we discuss some real-time aspects relevant for the viability of the two-stage scenario.

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