Speaker
Luigi Antonio Fusco
(University of Bologna)
Description
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.
| Registration number following "ICRC2015-I/" | 74 |
|---|---|
| Collaboration | KM3NeT |
Primary author
Luigi Antonio Fusco
(University of Bologna)
