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arXiv · 2409.04703

Constraints on neutrino non-standard interactions from COHERENT, PandaX-4T and XENONnT

Gang Li·Chuan-Qiang Song·Feng-Jie Tang·Jiang-Hao Yu
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Abstract

We investigate constraints on neutrino non-standard interactions (NSIs) in the effective field theory framework, using data from the first measurement of solar $^8$B neutrinos via coherent elastic neutrino-nucleus scattering (CE$\nu$NS) in the PandaX-4T and XENONnT experiments and data from the COHERENT experiment. The impacts of neutrino NSIs on the CE$\nu$NS cross section and the matter effect in the propagation of solar neutrinos are included, while we obtain that the expected number of CE$\nu$NS events is more sensitive to neutrino NSIs appearing in the cross section. Due to relatively large statistical uncertainties, the sensitivities of the PandaX-4T and XENONnT experiments to the neutrino NSIs are currently limited, compared to the COHERENT experiment. Besides, we find that since the central value of the measured CE$\nu$NS counts significantly differs from the Standard Model prediction, the sensitivity of PandaX-4T experiment is even more restricted compared to XENONnT. However, the measurements of PandaX-4T and XENONnT are uniquely sensitive to the neutrino NSIs for the $\tau$ flavor due to oscillation feature of the solar $^8$B neutrinos. We also assess how the experimental central value, exposure, and systematic uncertainties will affect the constraints on neutrino NSIs from various CE$\nu$NS measurements in the future.

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Gang Li, Chuan-Qiang Song, Feng-Jie Tang, Jiang-Hao Yu. 2024-09-07. Constraints on neutrino non-standard interactions from COHERENT, PandaX-4T and XENONnT. https://arxiv.org/abs/2409.04703

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