Probing invisible neutrino decay with KM3NeT/ORCA
Abstract
In the era of precision measurements of the neutrino oscillation parameters, upcoming neutrino experiments will also be sensitive to physics beyond the Standard Model. KM3NeT/ORCA is a neutrino detector optimised for measuring atmospheric neutrinos from a few GeV to around 100 GeV. In this paper, the sensitivity of the KM3NeT/ORCA detector to neutrino decay has been explored. A three-flavour neutrino oscillation scenario, where the third neutrino mass state ν3 decays into an invisible state, e.g. a sterile neutrino, is considered. We find that KM3NeT/ORCA would be sensitive to invisible neutrino decays with 1/α3 = τ3/m3< 180 ps/eV at 90% confidence level, assuming true normal ordering. Finally, the impact of neutrino decay on the precision of KM3NeT/ORCA measurements for θ23, Δ m312 and mass ordering have been studied. No significant effect of neutrino decay on the sensitivity to these measurements has been found.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- April 2023
- DOI:
- 10.1007/JHEP04(2023)090
- arXiv:
- arXiv:2302.02717
- Bibcode:
- 2023JHEP...04..090K
- Keywords:
-
- Beyond Standard Model;
- Neutrino Detectors and Telescopes (experiments);
- Oscillation;
- High Energy Physics - Experiment
- E-Print:
- 27 pages, 14 figures, bibliography updated, typos corrected