2026-04-05T10:52:35Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1050072026-01-16T06:21:00Zcom_2072_1033col_2072_452950

Intrinsic limits on resolutions in muon- and electron-neutrino charged-current events in the KM3NeT/ORCA detector Ageron, M. Aiello, G. Ameli, F André, Michel Àrees temàtiques de la UPC::Física::Astronomia i astrofísica Neutrinos Neutrino astrophysics Astronomy--Observations Neutrino Detectors and Telescopes (experiments) Neutrins Astrofísica Studying atmospheric neutrino oscillations in the few-GeV range with a multi-megaton 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 effects in the 1-20 GeV range. It is found that fluctuations 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 significantly less importance. These results will therefore also be applicable to similar detectors/media, such as those in ice. Postprint (author's final draft) 2017-05-01 Article https://link.springer.com/article/10.1007%2FJHEP05%282017%29008 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain