July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Rejection of atmospheric muons in KM3NeT/ORCA

Aug 1, 2015, 3:30 PM
Amazon Foyer Terrace (World Forum)

Amazon Foyer Terrace

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 263
Poster contribution NU-EX Poster 2 DM and NU


Luigi Antonio Fusco (University of Bologna)


KM3NeT is a future research infrastructure hosting the next-generation underwater neutrino observatory in the Mediterranean Sea. Within KM3NeT, the ORCA detector will be devoted to the measurement of the neutrino mass hierarchy, by investigating matter-induced effects in the oscillation pattern of atmospheric neutrinos. The main background for this search is given by atmospheric muons coming from cosmic-ray air showers and reaching the detector. Downward-going atmospheric muons can mimic upward going neutrino induced events and represent a major difficulty in this high precision measurement. Monte Carlo simulations have been used to establish a rejection strategy for these events, based only on the output of event reconstruction algorithms without requiring a larger surrounding detector or the use of a part of the instrumented volume for veto purposes. A percent-level contamination of atmospheric muons in the final selected sample can be obtained without significant deterioration of the detector performance.
Collaboration KM3NeT
Registration number following "ICRC2015-I/" 74

Primary author

Luigi Antonio Fusco (University of Bologna)

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