Hybrid textures of Majorana neutrino mass matrix and current experimental tests
2013 (English)In: Physical Review D, ISSN 1550-7998, Vol. 87, no 9, 093010- p.Article in journal (Refereed) Published
Motivated by recent measurements of a relatively large theta(13) in the Daya Bay and RENO reactor neutrino experiments, we carry out a systematic analysis of the hybrid textures of Majorana neutrino mass matrix M-v, which contain one texture zero and two equal nonzero matrix elements. We show that three neutrino masses (m(1).m(2).m(3)) and three leptonic CP-violating phases (delta, rho, sigma) can fully be determined from two neutrino mass-squared differences (delta m(2), Delta m(2)) and three flavor mixing angles (theta(12), theta(23), theta(13)). Out of sixty logically possible patterns of M-v, thirty-nine are found to be compatible with current experimental data at the 3 sigma level. We demonstrate that the texture zero of M-v is stable against one-loop quantum corrections, while the equality between two independent elements not. Phenomenological implications of M-v for the neutrinoless double-beta decay and leptonic CP violation are discussed, and a realization of the texture zero and equality by means of discrete flavor symmetries is illustrated.
Place, publisher, year, edition, pages
2013. Vol. 87, no 9, 093010- p.
IdentifiersURN: urn:nbn:se:kth:diva-124460DOI: 10.1103/PhysRevD.87.093010ISI: 000319655600004ScopusID: 2-s2.0-84878563114OAI: oai:DiVA.org:kth-124460DiVA: diva2:636197
QC 201307092013-07-092013-07-052013-07-09Bibliographically approved