TY  - JOUR
AU  - KM3NeT Collaboration (Aiello, S. et al
AU  - Alves Garre, S.
AU  - Calvo, D.
AU  - Carretero, V.
AU  - Colomer, M.
AU  - Hernandez-Rey, J. J.
AU  - Illuminati, G.
AU  - Khan Chowdhury, N. R.
AU  - Manczak, J.
AU  - Palacios Gonzalez, J.
AU  - Pieterse, C.
AU  - Real, D.
AU  - Salesa Greus, F.
AU  - Zornoza, J. D.
AU  - Zuñiga, J.
PY  - 2022
DA  - 2022//
TI  - Determining the neutrino mass ordering and oscillation parameters with KM3NeT/ORCA
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 26 - 16pp
VL  - 82
IS  - 1
PB  - Springer
AB  - The next generation of water Cherenkov neutrino telescopes in the Mediterranean Sea are under construction offshore France (KM3NeT/ORCA) and Sicily (KM3NeT/ARCA). The KM3NeT/ORCA detector features an energy detection threshold which allows to collect atmospheric neutrinos to study flavour oscillation. This paper reports the KM3NeT/ORCA sensitivity to this phenomenon. The event reconstruction, selection and classification are described. The sensitivity to determine the neutrino mass ordering was evaluated and found to be 4.4 sigma if the true ordering is normal and 2.3 sigma if inverted, after 3 years of data taking. The precision to measure Delta m(32)(2) and theta(23) were also estimated and found to be 85.10(-6) eV(2) and (<b>(+1.9)(-3.1))degrees for normal neutrino mass ordering and, 75.10(-6) eV(2) and ((+2.0)(-7.0))degrees for inverted ordering. Finally, a unitarity test of the leptonic mixing matrix by measuring the rate of tau neutrinos is described. Three years of data taking were found to be sufficient to exclude (nu)over-left-right-arrow tau event rate variations larger than 20% at 3 sigma level.
SN  - 1434-6044
UR  - https://arxiv.org/abs/2103.09885
UR  - https://doi.org/10.1140/epjc/s10052-021-09893-0
DO  - 10.1140/epjc/s10052-021-09893-0
LA  - English
N1  - WOS:000741416700005
ID  - KM3NeTCollaborationAiello_etal2022
ER  -