PT Journal
AU KM3NeT Collaboration (Aitllo, Sea
   Alves Garre, S
   Calvo, D
   Carretero, V
   Garcia Soto, A
   Gozzini, SR
   Hernandez-Rey, JJ
   Khan Chowdhury, NR
   Lazo, A
   Lessing, N
   Manczak, J
   Palacios Gonzalez, J
   Pastor Gomez, EJ
   Rahaman, U
   Real, D
   Salesa Greus, F
   Sanchez Losa, A
   Thakore, T
   Zornoza, JD
   Zuñiga, J
TI Probing invisible neutrino decay with KM3NeT/ORCA
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2023
BP 090
EP 30pp
VL 04
IS 4
DI 10.1007/JHEP04(2023)090
LA English
DE Beyond Standard Model; Neutrino Detectors and Telescopes (experiments); Oscillation
AB 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 v3 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/alpha 3 = T3/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 theta(23), Delta m(31)(2) and mass ordering have been studied. No significant effect of neutrino decay on the sensitivity to these measurements has been found.
ER