PT Journal
AU KM3NeT Collaboration (Adrian-Martinez, Sea
   Barrios-Marti, J
   Calvo, D
   Hernandez-Rey, JJ
   Illuminati, G
   Lotze, M
   Olcina, I
   Real, D
   Sanchez Garcia, A
   Tönnis, C
   Zornoza, JD
   Zuñiga, J
TI Intrinsic limits on resolutions in muon- and electron-neutrino charged-current events in the KM3NeT/ORCA detector
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2017
BP 008
EP 39pp
VL 05
IS 5
DI 10.1007/JHEP05(2017)008
LA English
DE Neutrino Detectors and Telescopes (experiments)
AB 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.
ER