Determining neutrino mass ordering with ICAL, JUNO and T2HK

Raikwal, Deepak; Choubey, Sandhya; Ghosh, Manojit (2023) Determining neutrino mass ordering with ICAL, JUNO and T2HK. The European Physical Journal Plus, 138 (2). ISSN 2190-5444

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Abstract

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 $\delta_{CP}$, 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 $7.2 \sigma$ even for the unfavorable value of $\delta_{CP}$ for T2HK and most conservative value of JUNO energy resolution of 5 \%/\sqrt{E MeV}. The synergy mainly comes because different oscillation channels prefer different values of $|\Delta m^2_{31}|$ in the fit when the mass-ordering $\chi^2$ 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 $\theta_{23}$ and (iv) effect of octant degeneracy in the determination of neutrino mass ordering.

Item Type:	Article
Uncontrolled Keywords:	Neutrino Oscillation; ICAL; JUNO; T2HK
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Division of Experimental Physics
Depositing User:	Manojit Ghosh
Date Deposited:	18 Dec 2025 10:12
URI:	http://fulir.irb.hr/id/eprint/10584
DOI:	10.1140/epjp/s13360-023-03697-9

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