1. Probing invisible neutrino decay with KM3NeT/ORCA.
- Author
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Aiello, S., Albert, A., Alves Garre, S., Aly, Z., Ambrosone, A., Ameli, F., Andre, M., Anghinolfi, M., Anguita, M., Ardid, M., Ardid, S., Aublin, J., Bagatelas, C., Bailly-Salins, L., Baret, B., Basegmez du Pree, S., Becherini, Y., Bendahman, M., Benfenati, F., and Berbee, E.
- 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 m 31 2 and mass ordering have been studied. No significant effect of neutrino decay on the sensitivity to these measurements has been found. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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