English

Electroweak baryogenesis and electron EDM in the TNMSSM

High Energy Physics - Phenomenology 2025-02-18 v1

Abstract

We have studied the impact of CP-violating (CPV) effects on electroweak baryogenesis (EWBG) and the electric dipole moment (EDM) of electron (ded_e), the electric dipole moment (EDM) of mercury neutron (dnd_n) and the electric dipole moment (EDM) of (dHgd_{Hg}) in an extension of the Minimal Supersymmetric Standard Model (MSSM). The model incorporating a SU(2)SU(2) triplet with hypercharges of ±1\pm1 and a gauge singlet from the standard model that is mutually coupled, is collectively referred to as the next-to-minimal supersymmetric standard model with triplets (TNMSSM). Furthermore, we discuss the strong first-order phase transition (PT) achieved by this model via tree-level effects. The numerical results indicate that the TNMSSM can account for the observed baryon asymmetry. Additionally, the regions favored by EWBG can be compatible with the corresponding electron EDM bounds when different contributions to the ded_e cancel each other out.

Keywords

Cite

@article{arxiv.2502.11409,
  title  = {Electroweak baryogenesis and electron EDM in the TNMSSM},
  author = {Xiang Yang and Ming-Hui Guo and Jin-Lei Yang and Qing-Hua Li and Tai-Fu Feng},
  journal= {arXiv preprint arXiv:2502.11409},
  year   = {2025}
}

Comments

32 pages, 13 figures

R2 v1 2026-06-28T21:46:33.381Z