Neutrino mixing based on mass matrices with a2↔3symmetry

2007/06/30 by Yoshio Koide, Eiichi Takasugi · 1 citation
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.77.016006

published as Phys.Rev.D77:016006,2008 · 12 pages, title and conclusions modified

arxiv created 2007/10/19 · openalex publication_date 2008/01/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Under an assumption that the 2\ensuremath↔3 symmetry is broken only through phases, we give a systematic investigation of possible lepton mass matrix forms without referring to explicit parameter values. Two types of the 2\ensuremath↔3 symmetry are investigated: one is that the left- and right-handed fields (f_L,f_R) obey the symmetry, and another one is that only f_L obeys the symmetry. In the latter case, in spite of no 2\ensuremath↔3 symmetry in the Majorana mass matrix M_R for \ensuremathν_R, the neutrino seesaw mass matrix still obeys the 2\ensuremath↔3 symmetry. Possible phenomenology is discussed.

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