Electroweak Phase Transition in a Right-Handed Neutrino Superfield Extended NMSSM
Abstract
Supersymmetric models with singlet extensions can accommodate single- or multi-step first-order phase transitions (FOPT) along the various constituent field directions. Such a framework can also produce Gravitational Waves, detectable at the upcoming space-based interferometers, e.g., U-DECIGO. We explore the dynamics of electroweak phase transition and the production of Gravitational Waves in an extended set-up of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a Standard Model singlet right-handed neutrino superfield. We examine the role of the new parameters compared to NMSSM on the phase transition dynamics and observe that the occurrence of a FOPT, an essential requirement for Electroweak Baryogenesis, typically favours a right-handed sneutrino state below 125 GeV. Our investigation shows how the analysis can offer complementary probes for physics beyond the Standard Model besides the collider searches.
Keywords
Cite
@article{arxiv.2301.05061,
title = {Electroweak Phase Transition in a Right-Handed Neutrino Superfield Extended NMSSM},
author = {Pankaj Borah and Pradipta Ghosh and Sourov Roy and Abhijit Kumar Saha},
journal= {arXiv preprint arXiv:2301.05061},
year = {2025}
}
Comments
77 pages, 17 figures, 4 tables, discussion on semi-analytic computation and gauge dependency added, version accepted for publication in JHEP