Neutrino Mixing: from the Broken μ-τSymmetry to the Broken Friedberg-Lee Symmetry
| dc.creator | Xing, Zhi-zhong | |
| dc.date | 2007-03-01 | |
| dc.date.accessioned | 2026-07-07T10:37:55Z | |
| dc.date.available | 2026-07-07T10:37:55Z | |
| dc.description | I argue that the observed flavor structures of leptons and quarks might imply the existence of certain flavor symmetries. The latter should be a good starting point to build realistic models towards deeper understanding of the fermion mass spectra and flavor mixing patterns. The μ-τpermutation symmetry serves for such an example to interpret the almost maximal atmospheric neutrino mixing angle (θ_23 \sim 45^\circ) and the strongly suppressed CHOOZ neutrino mixing angle (θ_13 < 10^\circ). In this talk I like to highlight a new kind of flavor symmetry, the Friedberg-Lee symmetry, for the effective Majorana neutrino mass operator. Luo and I have shown that this symmetry can be broken in an oblique way, such that the lightest neutrino remains massless but an experimentally-favored neutrino mixing pattern is achievable. We get a novel prediction for θ_13 in the CP-conserving case: \sinθ_13 = \tanθ_12 |(1- \tanθ_23)/ (1+ \tanθ_{23})|. Our scenario can simply be generalized to accommodate CP violation and be combined with the seesaw mechanism. Finally I stress the importance of probing possible effects of μ-τsymmetry breaking either in terrestrial neutrino oscillation experiments or with ultrahigh-energy cosmic neutrino telescopes. | |
| dc.description | LaTex 14 pages, 1 PS figure. Talk given at the International Workshop on Neutrino Masses and Mixings, December 17 - 19, 2006, Shizuoka, Japan | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0703007 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0703007 | |
| dc.identifier | Int.J.Mod.Phys.E16:1361-1372,2007 | |
| dc.identifier | doi:10.1142/S0218301307006721 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/180543 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Neutrino Mixing: from the Broken μ-τSymmetry to the Broken Friedberg-Lee Symmetry | |
| dc.type | text |