Naslov
Neutrino mass ordering: Circumventing the challenges using synergy between T2HK and JUNO

Autori
Choubey, Sandhya ; Ghosh, Manojit ; Raikwal, Deepak

Izvornik
Physical review. D (2470-0010) 106 (2022), 11; 115013, 6

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Neutrino Oscillation

Sažetak
One of the major open problems of neutrino physics is MO (mass ordering). We discuss the prospects of measuring MO with two under-construction experiments T2HK and JUNO. JUNO alone is expected to measure MO with greater than $3\sigma$ significance as long as certain experimental challenges are met. In particular, JUNO needs better than 3\% energy resolution for MO measurement. On the other hand, T2HK has rather poor prospects at measuring the MO, especially for certain ranges of the CP violating parameter $\delta_{; ; \rm CP}; ; $, posing a major drawback for T2HK. In this article we show that the synergy between JUNO and T2HK will bring two-fold advantage. Firstly, the synergy between the two experiments helps us determine the MO at a very high significance. With the baseline set-up of the two experiments, we have a greater than $9\sigma$ determination of the MO for all values of $\delta_{; ; \rm CP}; ; $. Secondly, the synergy also allows us to relax the constraints on the two experiments. We show that JUNO, could perform extremely well even for energy resolution of 5\%, while for T2HK the MO problem with ``bad" values of $\delta_{; ; \rm CP}; ; $ goes away. The MO sensitivity for the combined analysis is expected to be greater than $6\sigma$ for all values of $\delta_{; ; \rm CP}; ; $ and with just 5\% energy resolution for JUNO.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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