Neutrino masses and mixing in A5 with flavor antisymmetry

Show simple item record Joshipura, Anjan S. Nath, Newton 2016-09-06T07:33:45Z 2016-09-06T07:33:45Z 2016-08
dc.identifier.citation Joshipura, Anjan S. and Nath, Newton, “Neutrino masses and mixing in A5 with flavor antisymmetry”, Physical Review D, DOI: 10.1103/PhysRevD.94.036008, vol. 94, no. 3, Aug 2016. en_US
dc.identifier.issn 2470-0010
dc.identifier.issn 2470-0029
dc.description.abstract We discuss the consequences of assuming that the (Majorana) neutrino mass matrix Mν and the charged lepton mass matrix Ml satisfy STνMνSν=−Mν and T†lMlM†lTl=MlM†l with respect to some discrete groups Sν and Tl contained in A5. These assumptions lead to a neutrino mass spectrum with two degenerate and one massless neutrino and also constrain mixing among them. We derive possible mixing patterns following from the choices Sν=Z2, Z2×Z2, and Tl=Z2,Z2×Z2,Z3,Z5 as subgroups of A5. One predicts the maximal atmospheric neutrino mixing angle θ23 and μ−τ reflection symmetry in a large number of cases, but it is also possible to obtain nonmaximal values for θ23. Only the third column of the neutrino mixing matrix can be obtained at the leading order due to degeneracy in masses of two of the neutrinos. We take up a specific example within the A5 group and identify Higgs vacuum expectation values which realize the above assumptions. Nonleading terms present in this example are shown to lead to splitting among degenerate pairs and a consistent description of both neutrino masses and mixing angles. en_US
dc.description.statementofresponsibility by Anjan S. Joshipura and Newton Nath
dc.format.extent vol. 94, no. 3
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.title Neutrino masses and mixing in A5 with flavor antisymmetry en_US
dc.type Article en_US
dc.relation.journal Physical Review D

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