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Confusing nonzero theta(13) with nonstandard interactions in the solar neutrino sector

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Confusing nonzero theta(13) with nonstandard interactions in the solar neutrino sector

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dc.contributor.author Palazzo, Antonio
dc.contributor.author Furtado Valle, José Wagner
dc.date.accessioned 2015-09-28T12:14:08Z
dc.date.available 2015-09-28T12:14:08Z
dc.date.issued 2009
dc.identifier.citation Palazzo, Antonio Furtado Valle, José Wagner 2009 Confusing nonzero theta(13) with nonstandard interactions in the solar neutrino sector Physical Review D 80 9 091301
dc.identifier.uri http://hdl.handle.net/10550/47382
dc.description.abstract Solar and KamLAND data are in slight tension when interpreted in the standard two-flavor oscillations framework and this may be alleviated allowing for a non-zero value of the mixing angle theta_13. Here we show that, likewise, non-standard flavor-changing interactions (FCI), possibly intervening in the propagation of solar neutrinos, are equally able to alleviate this tension and therefore constitute a potential source of confusion in the determination of theta_13. By performing a full three-flavor analysis of solar and KamLAND data in presence of FCI we provide a quantitative description of the degeneracy existing between theta_13 and the vectorial coupling eps_e\tau^dV characterizing the non-standard transitions between nu_e and nu_tau in the forward scattering process with d-type quarks. We find that couplings with magnitude eps_e\tau^dV ~ 10%, compatible with the existing bounds, can mimic the non-zero values of theta_13 indicated by the latest analyses.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2009, vol. 80, num. 9, p. 091301
dc.subject Física
dc.title Confusing nonzero theta(13) with nonstandard interactions in the solar neutrino sector
dc.type journal article es_ES
dc.date.updated 2015-09-28T12:14:08Z
dc.identifier.doi 10.1103/PhysRevD.80.091301
dc.identifier.idgrec 059501
dc.rights.accessRights open access es_ES

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