Thermal production of light Dirac right-handed sneutrino dark matter

2018/08/02 by Ki-Young Choi, Choi, Ki-Young, Jong‐Kuk Kim +3 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research

paper · pdf · doi:10.48550/arxiv.1808.00764

openalex publication_date 2018/08/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider the production of right-handed (RH) sneutrino dark matter in a model of Dirac neutrino where neutrino Yukawa coupling constants are very small. Dark matter RH sneutrinos are produced by scatterings and decays of thermal particles in the early Universe without reaching thermal equilibrium due to the small Yukawa couplings. We show that not only decays of thermal particles but also the thermal scatterings can be a dominant source as well as non-thermal production in a scenario with light sneutrinos and charged sleptons while other supersymmetric particles are heavy. We also discuss the cosmological implications of this scenario.

Cited by

• Freeze-in and Freeze-out in Right-Handed Neutrino Extended MSSM with Seesaw

Related

• Non-thermal dark matter production and leptogenesis in a L_μ-L_τ model
• Thermal effects in freeze-in neutrino dark matter production
• Tracing the Interplay between Non-Thermal Dark Matter and Right-Handed Dirac Neutrinos with LHC Data
• Right handed neutrino production in dense and hot plasmas
• Sterile neutrinos, dark matter and Standard Model extended by right-handed neutrinos