Leptonic CP asymmetry and Light flavored scalar
[摘要] We consider a situation where right-handed neutrinos couple to a light scalar which is possibly a Nambu-Goldstone boson resulting from high-energy symmetry breaking. Its coupling is typically complex-valued and flavor-dependent. In this work, we investigate the possibility of the leptonic asymmetry generation in the Universe from the right-handed neutrino decay to flavorful light scalar. Furthermore a new source of asymmetry generation from a single decay process is pointed out, which is characteristic of the present setting.
[发布日期] 2022-12-16 [发布机构]
[效力级别] [学科分类]
[关键词] Baryo-and Leptogenesis;Baryon/Lepton Number Violation;Neutrino Interactions [时效性]