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arXiv · 2510.12449

Constraining neutrino electromagnetic properties with recent low-energy electron recoil data at dark matter direct detection experiments

M. Demirci·H. I. Sezer·M. F. Mustamin·A. B. Balantekin
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Abstract

Neutrinos that are elastically scattered off atomic electrons provide a unique opportunity to investigate the Standard Model (SM) and beyond SM physics. In this work, we explore the new physics effects of neutrino electromagnetic properties through elastic neutrino-electron scattering using solar neutrinos at the low energy range of PandaX-4T and XENONnT experiments. The properties of interest include the neutrino magnetic moment, millicharge, and charge radius, all of which are natural consequences of non-zero neutrino masses. We investigate their effects by incorporating each property into the Standard Model (SM) framework, given the measured the solar neutrino flux. By analyzing the latest Run 0 and Run 1 datasets from the PandaX-4T experiment, together with recent results from XENONnT, we derive new constraints on each electromagnetic property of neutrino. We present both flavor-independent results, obtained using a common parameter for all three neutrino flavors, and flavor-dependent results, derived by marginalizing over the three neutrino flavor components. Bounds we obtained are comparable or improved compared to those reported in the previous studies.

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M. Demirci, H. I. Sezer, M. F. Mustamin, A. B. Balantekin. 2025-10-14. Constraining neutrino electromagnetic properties with recent low-energy electron recoil data at dark matter direct detection experiments. https://doi.org/10.1103/fmht-47gg

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