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# U_{PMNS} = U_ell^dagger U_nu

 dc.contributor.author Hochmuth, K.A. en_US dc.contributor.author Petcov, Serguey T. en_US dc.contributor.author Rodejohann, Werner en_US dc.date.accessioned 2007-08-09T12:57:46Z en_US dc.date.accessioned 2011-09-07T20:26:26Z dc.date.available 2007-08-09T12:57:46Z en_US dc.date.available 2011-09-07T20:26:26Z dc.date.issued 2007-08-09T12:57:46Z en_US dc.identifier.citation Phys. Lett. B 654 (2007) 177-188 en_US dc.identifier.uri http://preprints.sissa.it/xmlui/handle/1963/1993 en_US dc.description.abstract We consider corrections to vanishing U_{e3} and maximal atmospheric neutrino mixing originating from the relation U = U_ell^dagger U_nu, where U is the PMNS mixing matrix and U_ell (U_nu) is associated with the diagonalization of the charged lepton (neutrino) mass matrix. We assume that in the limit of U_ell or U_nu being the unit matrix, one has U_{e3} = 0 and theta_{23} = pi/4, while the solar neutrino mixing angle is a free parameter. Well-known special cases of the indicated scenario are the bimaximal and tri-bimaximal mixing schemes. If U_{e3} \neq 0 and theta_{23} \neq pi/4 due to corrections from the charged leptons, |U_{e3}| can be sizable (close to the existing upper limit) and we find that the value of the solar neutrino mixing angle is linked to the magnitude of CP violation in neutrino oscillations. In the alternative case of the neutrino sector correcting U_{e3} = 0 and theta_{23} = pi/4, we obtain a generically smaller |U_{e3}| than in the first case. Now the magnitude of CP violation in neutrino oscillations is connected to the value of the atmospheric neutrino mixing angle theta_{23}. We find that both cases are in agreement with present observations. We also introduce parametrization independent "sum-rules" for the oscillation parameters. en_US dc.format.extent 527727 bytes en_US dc.format.mimetype application/pdf en_US dc.language.iso en_US en_US dc.relation.ispartofseries SISSA;44/2007/EP en_US dc.relation.ispartofseries arXiv.org;0706.2975 en_US dc.relation.uri 10.1016/j.physletb.2007.08.072 en_US dc.title U_{PMNS} = U_ell^dagger U_nu en_US dc.type Preprint en_US dc.contributor.department Elementary Particle Theory en_US dc.contributor.area Physics en_US
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