The nuGeN experiment searches for coherent elastic neutrino-nucleus scattering (CEvNS) at the Kalinin Nuclear Power Plant. A 1.41-kg high-purity low-threshold germanium detector surrounded by active and passive shielding is deployed at the minimal distance of 11.1 m allowed by the lifting mechanism from the center of reactor core, utilizing one of the highest antineutrino fluxes among the competing experiments. The direct comparison of the count rates obtained during reactor-ON and reactor-OFF periods with the energy threshold of 0.29~keVee shows no statistically significant difference. New upper limits on the number of CEvNS events are evaluated on the basis of the residual ON−OFF count rate spectrum.
@article{arxiv.2502.18502,
title = {New constraints on coherent elastic neutrino-nucleus scattering by the nuGeN experiment},
author = {V. Belov and A. Bystryakov and M. Danilov and S. Evseev and M. Fomina and G. Ignatov and S. Kazartsev and J. Khushvaktov and T. Khussainov and A. Konovalov and A. Kuznetsov and A. Lubashevskiy and D. Medvedev and D. Ponomarev and D. Sautner and K. Shakhov and E. Shevchik and M. Shirchenko and S. Rozov and I. Rozova and S. Vasilyev and E. Yakushev and I. Zhitnikov and D. Zinatulina},
journal= {arXiv preprint arXiv:2502.18502},
year = {2025}
}