Sensitivity to light sterile neutrino mixing parameters with KM3NeT/ORCA

• Published in: Journal of High Energy Physics
• Main Authors: Aiello, S., Albert, A., Alshamsi, M., Alves Garre, S., Aly, Z., Ambrosone, A., Ameli, F., Andre, M., Androulakis, G., Anghinolfi, M., Anguita, M., Anton, G., Ardid Ramírez, Miguel, Ardid-Ramírez, Joan Salvador, Aublin, J., Bou Cabo, M., Diego-Tortosa, D., Espinosa Roselló, Víctor, García Méndez, J., Martínez Mora, Juan Antonio, Poirè, Chiara
• Other Authors: European Commission, Junta de Andalucía, GENERALITAT VALENCIANA, Deutsche Forschungsgemeinschaft, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, National Science Centre, Polonia, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Shota Rustaveli National Science Foundation, Netherlands Organization for Scientific Research, National Authority for Scientific Research, Rumanía, Centre National de la Recherche Scientifique, Francia, General Secretariat for Research and Technology, Grecia, Abdus Salam International Centre for Theoretical Physics, Ministero dell'Istruzione dell'Università e della Ricerca, Fundació Bancària Caixa d'Estalvis i Pensions de Barcelona
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer-Verlag 2021
• Subjects: Neutrino Detectors and Telescopes (experiments); Oscillation; Orca
• Online Access: http://hdl.handle.net/10251/189367; https://doi.org/10.1007/JHEP10(2021)180

[EN] KM3NeT/ORCA is a next-generation neutrino telescope optimised for atmospheric neutrino oscillations studies. In this paper, the sensitivity of ORCA to the presence of a light sterile neutrino in a 3+1 model is presented. After three years of data taking, ORCA will be able to probe the active-sterile mixing angles ¿¿¿, ¿¿¿, ¿¿¿ and the effective angle ¿µ¿, over a broad range of mass squared difference ¿m² ~ [10¿5, 10] eV2, allowing to test the eV-mass sterile neutrino hypothesis as the origin of short baseline anomalies, as well as probing the hypothesis of a very light sterile neutrino, not yet constrained by cosmology. ORCA will be able to explore a relevant fraction of the parameter space not yet reached by present measurements. The authors acknowledge the financial support of the funding agencies: Agence Nationale de la Recherche (contract ANR-15-CE31-0020), Centre National de la Recherche Scientifique (CNRS), Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), LabEx UnivEarthS (ANR-10-LABX-0023 and ANR-18-IDEX-0001), Paris Ile-de-France Region, France; Shota Rustaveli National Science Foundation of Georgia (SRNSFG, FR-18-1268), Georgia; Deutsche Forschungsgemeinschaft (DFG), Germany; The General Secretariat of Research and Technology (GSRT), Greece; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Universita e della Ricerca (MIUR), PRIN 2017 program (Grant NAT-NET 2017W4HA7S) Italy; Ministry of Higher Education Scientific Research and Professional Training, ICTP through Grant AF-13, Morocco; Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands; The National Science Centre, Poland (2015/18/E/ST2/00758); National Authority for Scientific Research (ANCS), Romania; Ministerio de Ciencia, Innovacion, Investigacion y Universidades (MCIU): Programa Estatal de Generacion de Conocimiento (refs. PGC2018-096663-B-C41, -A-C42, -B-C43, -B-C44) (MCIU/FEDER), Generalitat Valenciana: Prometeo (PROMETEO/2020/019), Grisolia (ref. ...