Electro-weak Phase Transition With Three Phases in The $SU(2{)}_1\otimes SU(2{)}_2\otimes U(1{)}_Y$ Model

Abstract

Our analysis shows that SM-like electroweak phase transition (EWPT) in the $SU(2{)}_1\otimes SU(2{)}_2\otimes U(1{)}_Y$ (2-2-1) model is a first-order phase transition at the $200$ GeV scale (the SM scale). Its strength ($S$) is about $1-2.7$ and the masses of new gauge bosons are larger than $1.7$ TeV when the second VEV is larger than $535$ GeV in a three-stage EWPT scenario and the coupling constant of $SU(2{)}_2$ group must be larger than 2. Therefore, this first order EWPT can be used to fix VEVs and the coupling constant of the gauge group in electro-weak models.

15 pages, 3 figures

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