Abstract
We study the matter effect caused by non-standard neutrino interactions (NSI) in the future solar neutrino experiments, DUNE, HK and MICA. The upcoming reactor experiment, JUNO is expected to provide the most precise measurements of solar neutrino oscillation parameters and is going to open up the era of sub-percent precision in the leptonic mixing sector of the Standard Model (SM). Considering JUNO can measure $\Delta m ^2 _{21}$ and $\theta_{12}$ by sub-percent precision and assuming SM as the null hypothesis, we study the possibility to constrain NSI parameters by the future solar neutrino experiments such as DUNE, HK and MICA. For this purpose, we study the effect of NSI on solar neutrino propagation in the Sun and Earth and explore the dependence of the day-night asymmetry on the NSI parameters. We also study the effect of NSI at the water Cerenkov detector on the simulated data for these experiments.
Highlights
Neutrino oscillation is well established by the data from a plethora of neutrino experiments using solar, atmospheric, reactor, and accelerator neutrino experiments over the last two decades [1]
We investigate how well precision measurements of oscillation probabilities at Jiangmen Underground Neutrino Observatory (JUNO) can be used to probe the existence of NSI
Since solar neutrino oscillation probabilities are highly dependent on the NSI parameters due to the matter effect, with precise measurement of Δm221 and θ12 by JUNO, we can investigate how well the future solar neutrino observatories can constrain nonstandard neutrino interaction parameters
Summary
Neutrino oscillation is well established by the data from a plethora of neutrino experiments using solar, atmospheric, reactor, and accelerator neutrino experiments over the last two decades [1]. As studied in [14], one proposed solution is the sterile neutrino oscillation with the mass-squared difference of order of Oð10−5Þ eV2, which is the so-called super light sterile neutrino scenario (SSNS) Another possibility is that the tension can be resolved by introducing the flavordependent NSI in neutrino propagation [15,16]. We discuss the matter effect caused by NSI in the future solar neutrino experiments, using precision measurements of oscillation probabilities at JUNO. Since solar neutrino oscillation probabilities are highly dependent on the NSI parameters due to the matter effect, with precise measurement of Δm221 and θ12 by JUNO, we can investigate how well the future solar neutrino observatories can constrain nonstandard neutrino interaction parameters.
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