1↔2 processes of a sterile neutrino around the electroweak scale in a thermal plasma

2020/08/31 by Xue-Min Jiang, Yi-Lei Tang, Zhao-Huan Yu +1 · 6 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Electroweak interaction #Leptogenesis #Lepton #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #hep-ph

paper · pdf · doi:10.1103/physrevd.103.095003

published in Physical review. D/Physical review. D. 103(9) (American Physical Society) · HTL vertex corrections (Eqn.~(A4)) have been included to acquire the gauge invariant results. Data had been updated

openalex created_date 2020/08/07 · arxiv created 2021/03/20 · openalex publication_date 2021/05/06 · arxiv updated 2021/05/12 · openalex updated_date 2026/08/05

Abstract

In this paper, we apply the Goldstone equivalence gauge to calculate the 1\ensuremath↔2 processes of a sterile neutrino in a thermal plasma below the standard model (SM) critical temperature T_c\ensuremath≈160 GeV. The sterile neutrino's mass is around the electroweak scale, 50 GeV\ensuremath≤m_N\ensuremath≤200 GeV, and the acquired thermal averaged effective width \mathrm\ensuremathΓ_tot does not depend on the gauge selection and is continuous around the crossover. We also apply our results to perform a preliminary calculation of leptogenesis.

Citations

• Flavour covariant transport equations: An application to resonant leptogenesis
• Kadanoff–Baym approach to flavour mixing and oscillations in resonant leptogenesis
• Particle dark matter: evidence, candidates and constraints
• Sterile neutrino searches at future e^-e⁺, pp, and e^-p colliders
• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
• Leptogenesis