Determining neutrino mass ordering with ICAL, JUNO and T2HK
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
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.
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