Critical Higgs Mass and Temperature Dependence of Gauge Boson Masses in the SU(2) Gauge-Higgs Model

Details Critical Higgs Mass and Temperature Dependence of Gauge Boson Masses in the SU(2) Gauge-Higgs Model Critical Higgs Mass and Temperature Dependence of Gauge Boson Masses in the SU(2) Gauge-Higgs Model

1996-08-15

arxiv.org/abs/hep-lat/9608087v1

Nucl.Phys.Proc.Suppl. 53 (1997) 623-625

Physics

High Energy Physics

High Energy Physics - Lattice

Talk presented at LATTICE96(electroweak), 3 pages, LaTeX2e File, Style File, 4 eps figures included

Scientific paper

10.1016/S0920-5632(96)00736-0

We study the effective 3-D SU(2) Gauge-Higgs model at finite temperature for Higgs-masses in the range from $60$ GeV up to $100$ GeV. The first order electroweak phase transition weakens with increasing Higgs-mass and terminates at a critical end-point. For Higgs-mass values larger than about $m_{H,c}=75.4(6)$ GeV the thermodynamic signature of the transition is described by a crossover. Close to this Higgs-mass value we investigate the vector boson propagator in Landau gauge. The calculated W-boson screening masses are compared with predictions based on gap equations.

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