A1 Journal article (refereed)
Combined sensitivity of JUNO and KM3NeT/ORCA to the neutrino mass ordering (2022)

KM3NeT collaboration, JUNO collaboration. (2022). Combined sensitivity of JUNO and KM3NeT/ORCA to the neutrino mass ordering. Journal of High Energy Physics, 2022(3), Article 55. https://doi.org/10.1007/JHEP03(2022)055

JYU authors or editors

Publication details

All authors or editors: KM3NeT collaboration; JUNO collaboration

Journal or series: Journal of High Energy Physics

ISSN: 1126-6708

eISSN: 1029-8479

Publication year: 2022

Publication date: 09/03/2022

Volume: 2022

Issue number: 3

Article number: 55

Publisher: Springer Science and Business Media LLC

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1007/JHEP03(2022)055

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/81706

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2108.06293


This article presents the potential of a combined analysis of the JUNO and KM3NeT/ORCA experiments to determine the neutrino mass ordering. This combination is particularly interesting as it significantly boosts the potential of either detector, beyond simply adding their neutrino mass ordering sensitivities, by removing a degeneracy in the determination of ∆m231 between the two experiments when assuming the wrong ordering. The study is based on the latest projected performances for JUNO, and on simulation tools using a full Monte Carlo approach to the KM3NeT/ORCA response with a careful assessment of its energy systematics. From this analysis, a 5σ determination of the neutrino mass ordering is expected after 6 years of joint data taking for any value of the oscillation parameters. This sensitivity would be achieved after only 2 years of joint data taking assuming the current global best-fit values for those parameters for normal ordering.

Keywords: particle physics; neutrinos; research equipment; detectors

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2022

Preliminary JUFO rating: 2

Last updated on 2022-20-09 at 14:54