Electroweak phase transition in the reduced minimal 3-3-1 model

Abstract

The electroweak phase transition is considered in the framework of the reduced minimal 3-3-1 model. The structure of the phase transition in this model is divided into two parts. The first part is the phase transition $\mathrm{SU}(3)\ensuremath{\rightarrow}\mathrm{SU}(2)$ at the TeV scale, and the second is $\mathrm{SU}(2)\ensuremath{\rightarrow}\mathrm{U}(1)$, which is like the standard model electroweak phase transition. When the mass of the neutral Higgs boson (${h}_{1}$) is taken to be equal to the LHC value, ${m}_{{h}_{1}}=125\text{ }\text{ }\mathrm{GeV}$, these phase transitions are first-order transitions; the mass of ${Z}_{2}$ is about 4.8 TeV, and we find the region of parameter space with the first-order phase transition at the ${v}_{{\ensuremath{\rho}}_{0}}=246\text{ }\text{ }\mathrm{GeV}$ scale, leading to an effective potential where the mass of the charged Higgs boson is in the range $3.258\text{ }\text{ }\mathrm{TeV}<{m}_{{h}_{++}}<19.549\text{ }\text{ }\mathrm{TeV}$. Therefore, with this approach new bosons are the triggers of the first-order electroweak phase transition, which provides significant implications for the viability of electroweak baryogenesis scenarios.