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

Preprint

6 July 1994

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9407238

Abstract

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.

Keywords

MINIMAL STANDARD MODEL
SPHALERON TRANSITION
LOOP CORRECTIONS
TRANSITION RATE
STANDARD MODEL
PREVENTED
BARYON
GEV

All Related Versions

Version 1, 1994-07-06, ArXiv
Published version: Physics Letters B, 336 (3-4), 457.

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