The Two loop MSSM finite temperature effective potential with stop condensation - INSPIRE

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The Two loop MSSM finite temperature effective potential with stop condensation

Dec, 1996

30 pages

Published in:

Nucl.Phys.B 497 (1997) 387-414

e-Print:

hep-ph/9612364 [hep-ph]

DOI:

10.1016/S0550-3213(97)00252-6

Report number:

HD-THEP-96-56

View in:

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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 \sim 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.

Note:

30 pages, 7 figures Report-no: HD-THEP-96-56

11.10.Wx
12.60.Jv
98.80.Cq
Finite temperature field theory
Supersymmetry
Electroweak phase transition
gauge field theory: SU(3) x SU(2) x U(1)
supersymmetry
effective action
effective potential

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