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

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arxiv 2502.18502 v1 pith:MZXI3H33 submitted 2025-02-21 hep-ex nucl-ex

classification hep-exnucl-ex
keywords cevnscoherentcountelasticexperimentneutrino-nucleusnugenscattering
verification ladder T0 review T1 audit T2 compute T3 formal
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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 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Prospect of the NUCLEUS Experiment at Chooz for Coherent Elastic Neutrino-Nucleus Scattering and New Physics Searches

    hep-ex 2026-03 conditional novelty 6.0 of 10

    Assuming the low-energy background can be eliminated, a 7-gram NUCLEUS detector at Chooz is projected to see coherent neutrino-nucleus scattering at 4.7σ in one year and to set competitive bounds on new neutrino interactions.

  2. Testing lepton non-unitarity with the next generation of Germanium-based CE$\nu$NS reactor experiments

    hep-ph 2025-12 conditional novelty 5.0 of 10

    A future 100-kg Germanium reactor CEνNS experiment could constrain lepton non-unitarity to 1−α11² ≈ 0.005 and, under low-scale seesaw assumptions, probe new-physics scales up to ~2.5 TeV.

  3. Reactor antineutrinos CE$\nu$NS on germanium: CONUS+ and TEXONO as a new gateway to SM and BSM physics

    hep-ph 2025-01 conditional novelty 5.0 of 10

    CONUS+ and TEXONO reactor CEνNS data are consistent with the Standard Model and yield the most stringent limit on the electron neutrino millicharge through neutrino-electron scattering.

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