Gravitational waves from the phase transition in the B-LSSM

TL;DR

This paper investigates gravitational waves produced during a strong first-order phase transition in the B-LSSM, a supersymmetric extension of the Standard Model with an additional U(1) gauge symmetry, and assesses their detectability.

Contribution

It provides a detailed analysis of gravitational wave spectra resulting from phase transitions in the B-LSSM, including Higgs mass calculations and finite temperature effects.

Findings

Gravitational wave signals can reach $h^2\Omega_{GW}\sim10^{-11}$.

The signals are potentially detectable in future experiments.

The study links phase transition dynamics with observable gravitational wave signatures.

Abstract

Based on the gauge symmetry group $SU(3)_C\otimes{SU(2)_L}\otimes{U(1)_Y}\otimes{U(1)_{B-L}}$, the minimal supersymmetric extension of the SM with local B-L gauge symmetry(B-LSSM) has been introduced. In this model, we study the Higgs masses with the one-loop zero temperature effective potential corrections. Besides, the finite temperature effective potentials connected with two $U(1)_{B-L}$ Higgs singlets are deduced specifically. Then we can obtain the gravitational wave spectrums generated from the strong first-order phase transition. In the B-LSSM, the gravitational wave signals can be as strong as $h^2\Omega_{GW}\sim10^{-11}$, which may be detectable in the future experiments.