2023
DOI: 10.1007/jhep01(2023)010
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Scalar-singlet assisted leptogenesis with CP violation from the vacuum

Abstract: In the vanilla type-I seesaw leptogenesis scenario, CP violation required to generate the lepton asymmetries in the heavy Majorana neutrino decays stem from complex Dirac-type Yukawa couplings. In this paper we explore the case in which that CP violation originates from the vacuum expectation value of a complex scalar singlet at a very high scale. This non-trivial CP-violating phase can be successfully communicated to the low-energy neutrino sector via the heavy neutrino portal. The new scalar-singlet degrees … Show more

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Cited by 3 publications
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“…[16] in the context of dark matter and in ref. [15], in the context of leptogenesis in vanilla type-I seesaw.…”
Section: Jcap04(2024)054mentioning
confidence: 99%
“…[16] in the context of dark matter and in ref. [15], in the context of leptogenesis in vanilla type-I seesaw.…”
Section: Jcap04(2024)054mentioning
confidence: 99%