https://doi.org/10.1140/epjp/s13360-023-03697-9
Regular Article
Determining neutrino mass ordering with ICAL, JUNO and T2HK
1
Harish-Chandra Research Institute, A CI of Homi Bhabha National Institute, Chhatnag Road, 211019, Jhunsi, Prayagraj, India
2
Homi Bhabha National Institute, Anushakti Nagar, 400094, Mumbai, India
3
Department of Physics, School of Engineering Sciences, University Center, Roslagstullsbacken 21, 106 91, Stockholm, Sweden
4
The Oskar Klein Centre, AlbaNova University Center, Roslagstullsbacken 21, 106 91, Stockholm, Sweden
5
School of Physics, University of Hyderabad, 500046, Hyderabad, India
6
Center of Excellence for Advanced Materials and Sensing Devices, Ruder Bošković Institute, 10000, Zagreb, Croatia
Received:
7
November
2022
Accepted:
11
January
2023
Published online:
1
February
2023
In this paper, we study the synergy among the future accelerator (T2HK), future atmospheric (ICAL) and future reactor (JUNO) neutrino experiments to determine the neutrino mass ordering. T2HK can measure the mass ordering only for favorable values of 
, whereas the mass ordering sensitivity of JUNO is dependent on the energy resolution. Our results show that with a combination of T2HK, ICAL and JUNO one can have a mass ordering sensitivity of 7.2 
even for the unfavorable value of 
for T2HK and most conservative value of JUNO energy resolution of 5
. The synergy mainly comes because different oscillation channels prefer different values of 
in the fit when the mass-ordering 
is minimized. In this context, we also study: (i) effect of varying energy resolution of JUNO, (ii) the effect of longer run-time of ICAL, (iii) effect of different true values of 
and (iv) effect of octant degeneracy in the determination of neutrino mass ordering.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. corrected publication 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
