Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2000-09-20
Nucl.Phys. B597 (2001) 23-69
Physics
High Energy Physics
High Energy Physics - Lattice
56 pages, 16 figures; small clarifications added, concerning e.g. Higgs mass bounds; to appear in NPB
Scientific paper
10.1016/S0550-3213(00)00736-7
Using a three-dimensional (3d) effective field theory and non-perturbative lattice simulations, we study the MSSM electroweak phase transition with two dynamical Higgs doublets. We first carry out a general analysis of spontaneous CP violation in 3d two Higgs doublet models, finding that this part of the parameter space is well separated from that corresponding to the physical MSSM. We then choose physical parameter values with explicit CP violation and a light right-handed stop, and determine the strength of the phase transition. We find a transition somewhat stronger than in 2-loop perturbation theory, leading to the conclusion that from the point of view of the non-equilibrium constraint, MSSM electroweak baryogenesis can be allowed even for a Higgs mass mH \approx 115 GeV. We also find that small values of the mass parameter mA (\lsim 120 GeV), which would relax the experimental constraint on mH, do not weaken the transition noticeably for a light enough stop. Finally we determine the properties of the phase boundary.
Laine Mikko
Rummukainen Kari
No associations
LandOfFree
Two Higgs doublet dynamics at the electroweak phase transition: a non-perturbative study 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 Two Higgs doublet dynamics at the electroweak phase transition: a non-perturbative study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two Higgs doublet dynamics at the electroweak phase transition: a non-perturbative study will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-367612