Almost exact diagonal reflection symmetries and three-zero texture

In this paper, we consider the three-zero texture with diagonal reflection symmetries in the SM. The three-zero texture has two less assumptions ((Mu)11,(Mν)11≠0) than the universal four-zero texture of mass matrices (Mf)11=(Mf)13,31=0 for f=u,d,ν,e. The texture allows diagonal reflection symmetries...

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Main Author: Masaki J.S. Yang
Format: Article
Language:English
Published: Elsevier 2021-11-01
Series:Nuclear Physics B
Online Access:http://www.sciencedirect.com/science/article/pii/S0550321321002467
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author Masaki J.S. Yang
author_facet Masaki J.S. Yang
author_sort Masaki J.S. Yang
collection DOAJ
description In this paper, we consider the three-zero texture with diagonal reflection symmetries in the SM. The three-zero texture has two less assumptions ((Mu)11,(Mν)11≠0) than the universal four-zero texture of mass matrices (Mf)11=(Mf)13,31=0 for f=u,d,ν,e. The texture allows diagonal reflection symmetries to be almost exact and d-e unification. They reproduce the CKM and MNS matrices with accuracies of O(10−4) and O(10−3). By using perturbative approximations of the diagonalization, two relations with good accuracy for quark mass and mixing are obtained. Although this calculation is done in a special basis, it is a general result in a sense, because other textures and generalized CP symmetries exist by some weak basis transformation.By assuming a d-e unified relation (Md∼Me), we obtain the lightest neutrino mass m1≃2.12−5.64[meV] and the effective mass of the double beta decay |mee|≃1.23−2.15[meV].
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spelling doaj.art-ac465e50cda84ac18466834749fc68002022-12-21T20:45:11ZengElsevierNuclear Physics B0550-32132021-11-01972115549Almost exact diagonal reflection symmetries and three-zero textureMasaki J.S. Yang0Department of Physics, Saitama University, Shimo-okubo, Sakura-ku, Saitama, 338-8570, JapanIn this paper, we consider the three-zero texture with diagonal reflection symmetries in the SM. The three-zero texture has two less assumptions ((Mu)11,(Mν)11≠0) than the universal four-zero texture of mass matrices (Mf)11=(Mf)13,31=0 for f=u,d,ν,e. The texture allows diagonal reflection symmetries to be almost exact and d-e unification. They reproduce the CKM and MNS matrices with accuracies of O(10−4) and O(10−3). By using perturbative approximations of the diagonalization, two relations with good accuracy for quark mass and mixing are obtained. Although this calculation is done in a special basis, it is a general result in a sense, because other textures and generalized CP symmetries exist by some weak basis transformation.By assuming a d-e unified relation (Md∼Me), we obtain the lightest neutrino mass m1≃2.12−5.64[meV] and the effective mass of the double beta decay |mee|≃1.23−2.15[meV].http://www.sciencedirect.com/science/article/pii/S0550321321002467
spellingShingle Masaki J.S. Yang
Almost exact diagonal reflection symmetries and three-zero texture
Nuclear Physics B
title Almost exact diagonal reflection symmetries and three-zero texture
title_full Almost exact diagonal reflection symmetries and three-zero texture
title_fullStr Almost exact diagonal reflection symmetries and three-zero texture
title_full_unstemmed Almost exact diagonal reflection symmetries and three-zero texture
title_short Almost exact diagonal reflection symmetries and three-zero texture
title_sort almost exact diagonal reflection symmetries and three zero texture
url http://www.sciencedirect.com/science/article/pii/S0550321321002467
work_keys_str_mv AT masakijsyang almostexactdiagonalreflectionsymmetriesandthreezerotexture