Loop corrections to the sphaleron transition rate in the minimal standard model

Details Loop corrections to the sphaleron transition rate in the minimal standard model Loop corrections to the sphaleron transition rate in the minimal standard model

1994-07-06

arxiv.org/abs/hep-ph/9407238v1

Phys.Lett.B336:457-463,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages (LaTex) plus 2 figures (uuencoded postscript files); RUB-TPII-05/94

Scientific paper

10.1016/0370-2693(94)90558-4

The baryon number dissipation rate due to sphaleron transitions at high temperatures in the minimal standard model is evaluated. We find that this rate can be considerably suppressed by one loop contributions of bosonic and fermionic fluctuations which are particularly important for a small mass of the Higgs boson and a large top quark mass. Fixing the latter to its recently stated value of 174 GeV the complete erasure of the baryon asymmetry is prevented within the framework of the minimal standard model if the Higgs mass is less than about 66 GeV.

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