Non-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations

If massive neutrinos are Majorana particles, then the lepton number should be violated in nature and neutrino-antineutrino oscillations να↔ν‾β (for α,β=e,μ,τ) will definitely take place. In the present paper, we study the properties of CP violation in neutrino-antineutrino oscillations with the non-...

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Autores principales:	Yilin Wang, Shun Zhou
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/72db541f506f4216a9f8d4c25ebfc5b4
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spelling	oai:doaj.org-article:72db541f506f4216a9f8d4c25ebfc5b42021-12-02T04:59:02ZNon-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations0370-269310.1016/j.physletb.2021.136797https://doaj.org/article/72db541f506f4216a9f8d4c25ebfc5b42022-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0370269321007371https://doaj.org/toc/0370-2693If massive neutrinos are Majorana particles, then the lepton number should be violated in nature and neutrino-antineutrino oscillations να↔ν‾β (for α,β=e,μ,τ) will definitely take place. In the present paper, we study the properties of CP violation in neutrino-antineutrino oscillations with the non-unitary leptonic flavor mixing matrix, which is actually a natural prediction in the canonical seesaw model due to the mixing between light and heavy Majorana neutrinos. The oscillation probabilities P(να→ν‾β) and P(ν‾α→νβ) are derived, and the CP asymmetries Aαβ≡[P(να→ν‾β)−P(ν‾α→νβ)]/[P(να→ν‾β)+P(ν‾α→νβ)] are also calculated. Taking into account current experimental bounds on the leptonic unitarity violation, we show that the CP asymmetries induced by the non-unitary mixing parameters can significantly deviate from those in the limit of a unitary leptonic flavor mixing.Yilin WangShun ZhouElsevierarticlePhysicsQC1-999ENPhysics Letters B, Vol 824, Iss , Pp 136797- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Yilin Wang Shun Zhou Non-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations
description	If massive neutrinos are Majorana particles, then the lepton number should be violated in nature and neutrino-antineutrino oscillations να↔ν‾β (for α,β=e,μ,τ) will definitely take place. In the present paper, we study the properties of CP violation in neutrino-antineutrino oscillations with the non-unitary leptonic flavor mixing matrix, which is actually a natural prediction in the canonical seesaw model due to the mixing between light and heavy Majorana neutrinos. The oscillation probabilities P(να→ν‾β) and P(ν‾α→νβ) are derived, and the CP asymmetries Aαβ≡[P(να→ν‾β)−P(ν‾α→νβ)]/[P(να→ν‾β)+P(ν‾α→νβ)] are also calculated. Taking into account current experimental bounds on the leptonic unitarity violation, we show that the CP asymmetries induced by the non-unitary mixing parameters can significantly deviate from those in the limit of a unitary leptonic flavor mixing.
format	article
author	Yilin Wang Shun Zhou
author_facet	Yilin Wang Shun Zhou
author_sort	Yilin Wang
title	Non-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations
title_short	Non-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations
title_full	Non-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations
title_fullStr	Non-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations
title_full_unstemmed	Non-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations
title_sort	non-unitary leptonic flavor mixing and cp violation in neutrino-antineutrino oscillations
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/72db541f506f4216a9f8d4c25ebfc5b4
work_keys_str_mv	AT yilinwang nonunitaryleptonicflavormixingandcpviolationinneutrinoantineutrinooscillations AT shunzhou nonunitaryleptonicflavormixingandcpviolationinneutrinoantineutrinooscillations
_version_	1718400894851088384

Non-unitary leptonic flavor mixing and CP violation in neutrino-antineutrino oscillations

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