Gravitational waves from the phase transition in the B-LSSM

• Published in: The journal of high energy physics 2021-12, Vol.2021 (12), p.1-29, Article 52
• Main Authors: Dong, Xing-Xing, Feng, Tai-Fu, Zhang, Hai-Bin, Zhao, Shu-Min, Yang, Jin-Lei
• Format: Article
• Language: English
• Subjects: Classical and Quantum Gravitation; Elementary Particles; Gravitational waves; High energy physics; Nucleation; Parameters; Phase transitions; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Supersymmetry Phenomenology; Symmetry
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP12(2021)052

A bstract Based on the gauge symmetry group SU(3) C ⨂ SU(2) L ⨂ U(1) Y ⨂ 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, with the fine-tuned parameter regions, we can obtain the strength parameter α θ ~ 0.14 and the ratio of speed to Hubble rate β / H n ~ 5 at nucleation temperature, and then obtain observable gravitational wave signals. The gravitational wave signals can be as strong as h 2 Ω GW ~ 10 –9 , which may be detectable in the future experiments.