The strong first order electroweak phase transition in the U(1)_XSSM

2021/09/16 by Shu-Min Zhao, Jianfei Zhang, Zhao, Shu-Min +6
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.2109.07691

openalex publication_date 2021/09/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In the U(1)_X extension of the minimal supersymmetric standard model, there are three Higgs singlets and the corresponding trilinear terms in the Higgs effective potential. These new terms can allow a strongly first order electroweak phase transition(EWPT) for a wide parameter space. We use codes CosmoTransitions to analyze the thermal evolution of the Higgs effective potential and calculate nucleation temperature. To find reasonable parameter spaces for strongly first order EWPT, we randomly scan many parameters, which is numerically expensive. The diagrams are shown, that can lead to the 125 GeV Higgs mass and satisfy the first order EWPT. This work benefits the phenomenology of U(1)_XSSM and exploring new physics beyond the SM.

Related

• Singlets and the Electroweak Phase Transition
• First order thermal phase transition with 126 GeV Higgs mass
• Possibility of Electroweak Phase Transition at Low Temperature
• A Heavy Higgs Can Give Strong First Order Electroweak Phase Transition in the Standard Model
• Electroweak Phase Transition in Singlet Extensions of The Standard Model with Dimension-Six Operators