Intrinsic limits on resolutions in muon- and electron-neutrino charged-current events in the KM3NeT/ORCA detector
Nov 29, 201636 pages
Published in:
- JHEP 05 (2017) 008
- Published: May 2, 2017
e-Print:
- 1612.05621 [physics.ins-det]
View in:
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Abstract: (Springer)
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.Note:
- 37 pages, 28 figures, JHEP published version
- Neutrino Detectors and Telescopes (experiments)
- Cherenkov counter: water
- cascade: hadronic
- KM3NeT
- GEANT
- numerical calculations: Monte Carlo
- energy resolution
- spatial resolution
- charged current
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