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dc.contributor.authorMarzocca, Davides_ES
dc.contributor.authorPetcov, Serguey T.es_ES
dc.contributor.authorRomanino, Andreaes_ES
dc.contributor.authorCerdá Sevilla, Maríaes_ES
dc.identifier.citationJournal of High Energy Physics 05 (5): 073 - 27 (2013)es_ES
dc.description.abstractAfter the successful determination of the reactor neutrino mixing angle theta(13) not equal 0.16 not equal 0, a new feature suggested by the current neutrino oscillation data is a sizeable deviation of the atmospheric neutrino mixing angle theta(23) from pi/4. Using the fact that the neutrino mixing matrix U = (UeU nu)-U-dagger, where U-e and U-nu result from the diagonalisation of the charged lepton and neutrino mass matrices, and assuming that U-nu has a i) bimaximal (BM), H) tri-bimaximal (TBM) form, or else Hi) corresponds to the conservation of the lepton charge L' = L-e - L mu - L-tau (LC), we investigate quantitatively what are the minimal forms of U-e, in terms of angles and phases it contains, that can provide the requisite corrections to U-nu so that theta(13), theta(23) and the solar neutrino mixing angle theta(12) have values compatible with the current data. Two possible orderings of the 12 and the 23 rotations in U-e, "standard" and "inverse", are considered. The results we obtain depend strongly on the type of ordering. In the case of "standard" ordering, in particular, the Dirac CP violation phase delta, present in U, is predicted to have a value in a narrow interval around i) delta similar or equal to pi in the BM (or LC) case, H) delta congruent to 3 pi/2 or pi/2 in the TBM case, the CP conserving values delta = 0, pi, 2 pi being excluded in the TBM case at more than 4 sigma.es_ES
dc.description.sponsorshipThis work was supported in part by the INFN program on "Astroparticle Physics", the Italian MIUR program on "Neutrinos, Dark Matter and Dark Energy in the Era of LHC" the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan (S.T.P.), by the European Union FP7-ITN INVISIBLES and UNILHC (Marie Curie Action, PITAN-CA-2011-289442 and PITN-CA-2009-23792), and by the ERC Advanced Grant no. 267985 "DaMESyFla". Part of the work was done at the Galileo Galilei Institute for Theoretical Physics, Florence, Italy, which we thank for the kind hospitality and support.es_ES
dc.subjectNeutrino Physicses_ES
dc.subjectCP violationes_ES
dc.titleNonzero |U_e3| from charged lepton corrections and the atmospheric neutrino mixing anglees_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.contributor.funderEuropean Commissiones_ES
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