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arXiv · 2502.03258

Test of electric charge conservation in dark matter direct detection experiment

Z. H. Zhang·X. P. Geng·J. W. Hu
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Abstract

Electric charge conservation (ECC) is typically taken as an axiom in the standard model. Searching for small violations with high-performance experiments could lead us to new physics. In this work, we tested ``invisible" electric charge nonconservation (ECNC) events with 1.16 ton$\cdot$year electron recoil data from the XENON-nT experiment. There was no statistically significant signal, and the ECNC limit was updated to $\tau(e^-\rightarrow{\nu_e+\bar{\nu}_e+\nu_e}) > 4.34 \times10^{27}$ yr. This work increases the limit by two orders of magnitude and shows that dark matter direct detection experiments have great potential for further ECC testing.

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Z. H. Zhang, X. P. Geng, J. W. Hu. 2025-02-05. Test of electric charge conservation in dark matter direct detection experiment. https://doi.org/10.1103/trv7-c28m

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