A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos

The inverse and linear seesaw scenarios are two typical extensions of the canonical seesaw mechanism, which contain much more sterile degrees of freedom but can naturally explain the smallness of three active neutrino masses at a sufficiently low energy scale (e.g., the TeV scale). To fully describe...

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Autores principales:	He-chong Han, Zhi-zhong Xing
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/7d0c287563184cd39922db4a5b2a4aeb
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spelling	oai:doaj.org-article:7d0c287563184cd39922db4a5b2a4aeb2021-12-04T04:33:01ZA full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos0550-321310.1016/j.nuclphysb.2021.115609https://doaj.org/article/7d0c287563184cd39922db4a5b2a4aeb2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0550321321003060https://doaj.org/toc/0550-3213The inverse and linear seesaw scenarios are two typical extensions of the canonical seesaw mechanism, which contain much more sterile degrees of freedom but can naturally explain the smallness of three active neutrino masses at a sufficiently low energy scale (e.g., the TeV scale). To fully describe the mixing among three active neutrinos, three sterile neutrinos and three extra gauge-singlet neutral fermions in either of these two seesaw paradigms, we present the first full parametrization of the 9×9 flavor mixing matrix in terms of 36 rotation angles and 36 CP-violating phases. The exact inverse and linear seesaw formulas are derived, respectively; and possible deviations of the 3×3 active neutrino mixing matrix from its unitary limit are discussed by calculating the effective Jarlskog invariants and unitarity nonagons.He-chong HanZhi-zhong XingElsevierarticleNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENNuclear Physics B, Vol 973, Iss , Pp 115609- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 He-chong Han Zhi-zhong Xing A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos
description	The inverse and linear seesaw scenarios are two typical extensions of the canonical seesaw mechanism, which contain much more sterile degrees of freedom but can naturally explain the smallness of three active neutrino masses at a sufficiently low energy scale (e.g., the TeV scale). To fully describe the mixing among three active neutrinos, three sterile neutrinos and three extra gauge-singlet neutral fermions in either of these two seesaw paradigms, we present the first full parametrization of the 9×9 flavor mixing matrix in terms of 36 rotation angles and 36 CP-violating phases. The exact inverse and linear seesaw formulas are derived, respectively; and possible deviations of the 3×3 active neutrino mixing matrix from its unitary limit are discussed by calculating the effective Jarlskog invariants and unitarity nonagons.
format	article
author	He-chong Han Zhi-zhong Xing
author_facet	He-chong Han Zhi-zhong Xing
author_sort	He-chong Han
title	A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos
title_short	A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos
title_full	A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos
title_fullStr	A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos
title_full_unstemmed	A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos
title_sort	full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7d0c287563184cd39922db4a5b2a4aeb
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A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos

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A full parametrization of the 9 × 9 active-sterile flavor mixing matrix in the inverse or linear seesaw scenario of massive neutrinos