Global analysis of the post-SNO solar neutrino data for standard and nonstandard oscillation mechanisms

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Autor(es): dc.contributorPontificia Universidad Católica del Perú-
Autor(es): dc.contributorCA State University-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorThe Abdus Salam International Center for Theoretical Physics-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorGago, A. M.-
Autor(es): dc.creatorGuzzo, M. M.-
Autor(es): dc.creatorde Holanda, P. C.-
Autor(es): dc.creatorNunokawa, H.-
Autor(es): dc.creatorNunokawa, H.-
Autor(es): dc.creatorPeres, O. L.-
Autor(es): dc.creatorPleitez, V.-
Autor(es): dc.creatorZukanovich Funchal, R.-
Data de aceite: dc.date.accessioned2025-08-21T19:54:57Z-
Data de disponibilização: dc.date.available2025-08-21T19:54:57Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2002-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.65.073012-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/225119-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/225119-
Descrição: dc.descriptionWhat can we learn from solar neutrino observations? Is there any solution to the solar neutrino anomaly which is favored by the present experimental panorama? After SNO results, is it possible to affirm that neutrinos have mass? In order to answer such questions we analyze the current available data from the solar neutrino experiments, including the recent SNO result, in view of many acceptable solutions to the solar neutrino problem based on different conversion mechanisms, for the first time using the same statistical procedure. This allows us to do a direct comparison of the goodness of the fit among different solutions, from which we can discuss and conclude on the current status of each proposed dynamical mechanism. These solutions are based on different assumptions: (a) neutrino mass and mixing, (b) a nonvanishing neutrino magnetic moment, (c) the existence of nonstandard flavor-changing and nonuniversal neutrino interactions, and (d) a tiny violation of the equivalence principle. We investigate the quality of the fit provided by each one of these solutions not only to the total rate measured by all the solar neutrino experiments but also to the recoil electron energy spectrum measured at different zenith angles by the Super-Kamiokande Collaboration. We conclude that several nonstandard neutrino flavor conversion mechanisms provide a very good fit to the experimental data which is comparable with (or even slightly better than) the most famous solution to the solar neutrino anomaly based on the neutrino oscillation induced by mass.-
Descrição: dc.descriptionSección Física Departamento de Ciencias Pontificia Universidad Católica del Perú, Apartado 1761, Lima-
Descrição: dc.descriptionDepartment of Physics CA State University, Dominguez Hills, Carson, CA 90747-
Descrição: dc.descriptionInstituto de Física Universidade de São Paulo, Caixa Postal 66.318, 05315-970 São Paulo SP-
Descrição: dc.descriptionInstituto de Física Gleb Wataghin Universidade Estadual de Campinas–UNICAMP, 13083-970 Campinas SP-
Descrição: dc.descriptionThe Abdus Salam International Center for Theoretical Physics, I-34100 Trieste-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo SP-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo SP-
Formato: dc.format730121-7301210-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review D - Particles, Fields, Gravitation and Cosmology-
???dc.source???: dc.sourceScopus-
Título: dc.titleGlobal analysis of the post-SNO solar neutrino data for standard and nonstandard oscillation mechanisms-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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