New constraints on coherent elastic neutrino-nucleus scattering by the nuGeN experiment

Abstract

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~keV${}_{ee}$ 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.

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Cited by in corpus (7)

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• Standard Model Tested with Neutrinos
• Particle background characterization and prediction for the NUCLEUS reactor CE$\nu$NS experiment
• When backgrounds become signals: neutrino interactions in xenon-based dark matter detectors
• Phenomenological implications of the high-precision COHERENT germanium CE$\nu$NS data
• Testing lepton non-unitarity with the next generation of Germanium-based CE$\nu$NS reactor experiments
• Prospect of the NUCLEUS Experiment at Chooz for Coherent Elastic Neutrino-Nucleus Scattering and New Physics Searches