Broken mu-tau Symmetry and Leptonic CP Violation

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dc.creatorMohapatra, R. N.
dc.creatorRodejohann, W.
dc.date2005-07-27
dc.date2005-09-06
dc.date.accessioned2026-07-07T10:29:36Z
dc.date.available2026-07-07T10:29:36Z
dc.descriptionWe propose that leptonic CP violation arises from a breaking of the mu-tau exchange symmetry in the neutrino mass matrix which in turn is indicated by the near maximal atmospheric neutrino mixing and the near zero θ_{13}. We find that for the case of a normal hierarchy, present data already restricts the way CP violation may appear in the neutrino mass matrix and there is an interesting correlation between the mixing angle θ_{13}, the solar mixing angle θ_{12} and the Dirac CP phase. In the inverted hierarchy only θ_{13} and the Dirac phase are linked. We also discuss the impact of this kind of CP violation on the deviation of the atmospheric mixing from its maximal value. Moreover, if corrections to mu-tau symmetry arise from the charged lepton sector, where mu-tau symmetry is known to be broken anyway, we find interesting connections between the CP-even and -odd terms as well. Our predictions are testable in the proposed long baseline neutrino experiments.
dc.description13 pages, 2 figures. References added, to appear in PRD
dc.identifierhttps://arxiv.org/abs/hep-ph/0507312
dc.identifierhttp://arxiv.org/abs/hep-ph/0507312
dc.identifierPhys.Rev.D72:053001,2005
dc.identifierdoi:10.1103/PhysRevD.72.053001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177857
dc.subjectHigh Energy Physics - Phenomenology
dc.titleBroken mu-tau Symmetry and Leptonic CP Violation
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