Searching for non-unitary neutrino oscillations in the present T2K and NO ν A data

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Autor(es): dc.contributorUniversity of Johannesburg-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorShanghai Jiao Tong University-
Autor(es): dc.creatorMiranda, Luis Salvador-
Autor(es): dc.creatorPasquini, Pedro [UNESP]-
Autor(es): dc.creatorRahaman, Ushak-
Autor(es): dc.creatorRazzaque, Soebur-
Data de aceite: dc.date.accessioned2022-02-22T00:51:28Z-
Data de disponibilização: dc.date.available2022-02-22T00:51:28Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1140/epjc/s10052-021-09227-0-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/207804-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/207804-
Descrição: dc.descriptionThe mixing of three active neutrino flavors is parameterized by the unitary PMNS matrix. If there are more than three neutrino flavors and if the extra generations are heavy iso-singlets, the effective 3 × 3 mixing matrix for the three active neutrinos will be non-unitary. We have analyzed the latest T2K and NOνA data with the hypothesis of non-unitary mixing of the active neutrinos. We found that the 2019 NOνA data slightly (at ∼1σ CL) prefer the non-unitary mixing over unitary mixing. In fact, allowing the non-unitary mixing brings the NOνA best-fit point in the sin 2θ23- δCP plane closer to the T2K best-fit point. The 2019 T2K data, on the other hand, cannot rule out any of the two mixing schemes. A combined analysis of the NOνA and T2K 2019 data prefers the non-unitary mixing at 1σ CL. We derive constraints on the non-unitary mixing parameters using the best-fit to the combined NOνA and T2K data. These constraints are weaker than previously found. The latest 2020 data from both the experiments prefer non-unitarity over unitary mixing at 1σ CL. The combined analysis prefers non-unitarity at 2σ CL. The stronger tension, which exists between the latest 2020 data of the two experiments, also gets reduced with non-unitary analysis.-
Descrição: dc.descriptionCentre for Astro-Particle Physics (CAPP) and Department of Physics University of Johannesburg, PO Box 524-
Descrição: dc.descriptionInstituto de Física Teórica–Universidade Estadual Paulista (UNESP), R. Dr. Bento Teobaldo Ferraz 271, Barra Funda-
Descrição: dc.descriptionTsung-Dao Lee Institute and School of Physics and Astronomy Shanghai Jiao Tong University-
Descrição: dc.descriptionInstituto de Física Teórica–Universidade Estadual Paulista (UNESP), R. Dr. Bento Teobaldo Ferraz 271, Barra Funda-
Idioma: dc.languageen-
Relação: dc.relationEuropean Physical Journal C-
???dc.source???: dc.sourceScopus-
Título: dc.titleSearching for non-unitary neutrino oscillations in the present T2K and NO ν A data-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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