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

TL;DR

This paper investigates the electroweak phase transition within the reduced minimal 3-3-1 model, identifying conditions under which it is first order and exploring implications for baryogenesis.

Contribution

It analyzes the phase transition structure in the RM331 model and determines parameter regions where the transition is first order, highlighting the role of new bosons.

Findings

First order phase transition occurs at TeV scale in the model.

Mass of Z_2 boson is about 4.8 TeV.

Charged Higgs boson mass range is 4.154-5.946 TeV.

Abstract

The electroweak phase transition is considered in framework of the reduced minimal 3-3-1 model (RM331). Structure of phase transition in this model is divided into two periods. The first period is the phase transition SU(3) ---> SU(2) at TeV scale and the second one is SU(2)--> U(1), which is the like-Standard Model electroweak phase transition. When mass of the neutral Higgs boson (h_1) is taken to be equal to the LHC value: m_{h_1}=125 GeV, then these phase transitions are the first order phase 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 v_{\rho_0}=246 GeV scale, leading to an effective potential, where mass of the charged Higgs boson is in range of 4.154 TeV < m_{h_{++}} < 5.946 TeV. Therefore, with this approach, new bosons are the triggers of the first order electroweak phase transition with significant implications for the viability of electroweak baryogenesis scenarios.