Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-03-02
Nucl.Phys.B503:24-54,1997
Physics
High Energy Physics
High Energy Physics - Phenomenology
33 pages, latex2e, 5 figures, epsfig.sty. Final version to appear in Nuclear Physics B
Scientific paper
10.1016/S0550-3213(97)00437-9
Thermal two-loop QCD corrections associated with light stops have a dramatic effect on the strength of the MSSM electroweak phase transition, making it more strongly first order as required for the viability of electroweak baryogenesis. We perform a perturbative analysis of the transition strength in this model, including these important contributions, extending previous work to arbitrary values of the pseudoscalar Higgs boson mass, m_A. We find a strong enough transition in a region with 2< tan beta < 4 and m_A > 120 GeV, a light Higgs boson with nearly standard couplings, and mass below 85 GeV within the reach of LEP II, and one stop not much heavier than the top quark. In addition, we give a qualitative discussion of the parameter space dependence of the transition strength and comment on the possibility that the transition turns to a crossover for sufficiently large Higgs masses.
Carlos Beatriz de
Espinosa Jose Ramon
No associations
LandOfFree
The baryogenesis window in the MSSM does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The baryogenesis window in the MSSM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The baryogenesis window in the MSSM will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-47365