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Updated global analysis of the atmospheric neutrino data in terms of neutrino oscillations

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Updated global analysis of the atmospheric neutrino data in terms of neutrino oscillations

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dc.contributor.author Fornengo, Nicolao
dc.contributor.author González García, Mª Concepción
dc.contributor.author Furtado Valle, José Wagner
dc.date.accessioned 2015-10-22T11:21:42Z
dc.date.available 2015-10-22T11:21:42Z
dc.date.issued 2000
dc.identifier.citation Fornengo, Nicolao González García, Mª Concepción Furtado Valle, José Wagner 2000 Updated global analysis of the atmospheric neutrino data in terms of neutrino oscillations Nuclear Physics B 580 1-2 58 82
dc.identifier.uri http://hdl.handle.net/10550/47864
dc.description.abstract A global analysis of all the available atmospheric neutrino data is presented in terms of neutrino oscillations in the nu_mu -> nu_tau and nu_mu -> nu_s channels, where nu_s denotes a sterile neutrino. We perform our analysis of the contained events data as well as the upward-going neutrino-induced muon fluxes. In addition to the previous data samples of Frejus, Nusex, IMB and Kamioka experiments, we include the full data set of the 52 kton-yr of Super-Kamiokande, the recent 4.6 kton-yr contained events of Soudan2 and the results on upgoing muons from the MACRO and Baksan detectors. From the statistical analysis it emerges that the nu_mu -> nu_tau channel provides the best agreement with the combined data, with a best fit point of sin^2(2 theta) = 0.99 and Delta m^2 = 3.0 * 10^{-3} eV^2. Although somehow disfavoured, the nu_mu -> nu_s channels cannot be ruled out on the basis of the global fit to the full set of observables.
dc.language.iso eng
dc.relation.ispartof Nuclear Physics B, 2000, vol. 580, num. 1-2, p. 58-82
dc.subject Física
dc.title Updated global analysis of the atmospheric neutrino data in terms of neutrino oscillations
dc.type journal article es_ES
dc.date.updated 2015-10-22T11:21:43Z
dc.identifier.doi 10.1016/S0550-3213(00)00213-3
dc.identifier.idgrec 072176
dc.rights.accessRights open access es_ES

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