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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] 
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