The endpoint of the first-order phase transition of the SU(2) gauge-Higgs model on a 4-dimensional isotropic lattice

Details The endpoint of the first-order phase transition of the SU(2) gauge-Higgs model on a 4-dimensional isotropic lattice The endpoint of the first-order phase transition of the SU(2) gauge-Higgs model on a 4-dimensional isotropic lattice

1999-01-27

arxiv.org/abs/hep-lat/9901021v1

Phys.Rev.D60:013001,1999

Physics

High Energy Physics

High Energy Physics - Lattice

17 pages, 9 EPS figures, revtex and epsf

Scientific paper

10.1103/PhysRevD.60.013001

We study the first-order finite-temperature electroweak phase transition of the SU(2) gauge-Higgs model defined on a 4-dimensional isotropic lattice with temporal extension N_t=2. Finite-size scaling study of Lee-Yang zeros yields the value of the Higgs self coupling of the endpoint at lambda_c=0.00116(16). An independent analysis of Binder cumulant gives a consistent value for the endpoint. Combined with our zero-temperature measurement of Higgs and W boson masses, this leads to M_{H,c}=73.3 +- 6.4 GeV for the critical Higgs boson mass beyond which the electroweak transition turns into a crossover.

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