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 prod- ucts, 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 cas- cade in conjunction with the variation of the inelasticity y are most detrimental to the resolutions. The e ect 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.
Intrinsic limits on resolutions in muon- and electron-neutrino charged-current events in the KM3NeT/ORCA detector
BOZZA, Cristiano;DE SIO, CHIARA;Fusco, L. A.;GRELLA, Giuseppe;Stellacci, S. M.;
2017
Abstract
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 prod- ucts, 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 cas- cade in conjunction with the variation of the inelasticity y are most detrimental to the resolutions. The e ect 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.File | Dimensione | Formato | |
---|---|---|---|
Adrián-Martínez2017_Article_IntrinsicLimitsOnResolutionsIn.pdf
accesso aperto
Descrizione: Articolo
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Creative commons
Dimensione
1.18 MB
Formato
Adobe PDF
|
1.18 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.