%0 Journal Article %T Intrinsic limits on resolutions in muon- and electron-neutrino charged-current events in the KM3NeT/ORCA detector %A KM3NeT Collaboration (Adrian-Martinez, S. et al %A Barrios-Marti, J. %A Calvo, D. %A Hernandez-Rey, J. J. %A Illuminati, G. %A Lotze, M. %A Olcina, I. %A Real, D. %A Sanchez Garcia, A. %A Tönnis, C. %A Zornoza, J. D. %A Zuñiga, J. %J Journal of High Energy Physics %D 2017 %V 05 %N 5 %I Springer %@ 1029-8479 %G English %F KM3NeTCollaborationAdrian-Martinez_etal2017 %O WOS:000401072300004 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3130), last updated on Wed, 20 Nov 2019 15:10:53 +0000 %X 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 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. %K Neutrino Detectors and Telescopes (experiments) %R 10.1007/JHEP05(2017)008 %U http://arxiv.org/abs/1612.05621 %U https://doi.org/10.1007/JHEP05(2017)008 %P 008-39pp