Intrinsic limits on resolutions in muon and electron-neutrino charged-current events in the KM3NeT/ORCA detector

• Published in: Journal of High Energy Physics
• Main Authors: Adrián Martínez, Silvia, Ageron, M., Aiello, S., Albert, A., Ameli, F., Anassontzis, E. G., Andre, M., Androulakis, G., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Avgitas, T., Barbarino, G., Barbarito, E., Baret, B., Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María
• Other Authors: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Generalitat Valenciana, Agence Nationale de la Recherche, Francia, Agence de l'Oriental, Marruecos, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, National Authority for Scientific Research, Rumanía, Centre National de la Recherche Scientifique, Francia, Ministero dell'Istruzione dell'Università e della Ricerca, Italia, Centre National pour la Recherche Scientifique et Technique, Marruecos, Ministerio de Ciencia e Innovación
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer-Verlag 2017
• Subjects: Neutrino Detectors and Telescopes (experiments); FISICA APLICADA; Orca
• Online Access: http://hdl.handle.net/10251/151436; https://doi.org/10.1007/JHEP05(2017)008

[EN] Studying atmospheric neutrino oscillations in the few-GeV range with a multimegaton detector promises to determine the neutrino mass hierarchy. This is the main science goal pursued by the future KM3NeT/ORCA water Cherenkov detector in the Mediterranean Sea. In this paper, the processes that limit the obtainable resolution in both energy and direction in charged-current neutrino events in the ORCA detector are investigated. These processes include the composition of the hadronic fragmentation products, the subsequent particle propagation and the photon-sampling fraction of the detector. GEANT simulations of neutrino interactions in seawater produced by GENIE are used to study the e ects in the 1{20 GeV range. It is found that uctuations in the hadronic cascade in conjunction with the variation of the inelasticity y are most detrimental to the resolutions. The effect of limited photon sampling in the detector is of signi cantly less importance. These results will therefore also be applicable to similar detectors/media, such as those in ice. The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), IdEx program and UnivEarthS Labex program at Sorbonne Paris Cite (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02), France; The General Secretariat of Research and Technology (GSRT), Greece; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy; Agence de l'Oriental and CNRST, Morocco; Stichting voor Fundamenteel Onderzoek der Materie (FOM), Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands; National Authority for Scientific Research (ANCS), Romania; Plan Estatal de Investigacion (refs. FPA2015-65150-C3-1-P, -2-P and -3-P, (MINECO/FEDER)), Severo Ochoa Centre of Excellence and MultiDark Consolider (MINECO), and Prometeo and Grisolia programs (Generalitat ...