The electroweak phase transition with a singlet
高能物理 - 唯象学
2009-10-22 v1
摘要
We study the electroweak phase transition in the minimal extension of the Standard Model: an extra complex singlet with zero vacuum expectation value. The first-order phase transition is strengthened by the cubic term triggered in the one-loop effective potential by the extra boson. Plasma effects are considered to leading order: they shield the cubic terms and weaken the first-order phase transition. We find a region in the parameter space where baryon asymmetry washout is avoided for Higgs masses consistent with present experimental bounds. However in that region the theory becomes non-perturbative for scales higher than .
引用
@article{arxiv.hep-ph/9301285,
title = {The electroweak phase transition with a singlet},
author = {J. R. Espinosa and M. Quirós},
journal= {arXiv preprint arXiv:hep-ph/9301285},
year = {2009}
}
备注
11 pages (plus 5 figures.ps available upon request), latex, IEM-FT-67/93