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Exploring the Standard Model and Beyond from the Evidence of CEνNS with Reactor Antineutrinos in CONUS+

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arxiv 2501.10355 v2 pith:JIVYS6ZX submitted 2025-01-17 hep-ph

Exploring the Standard Model and Beyond from the Evidence of CEνNS with Reactor Antineutrinos in CONUS+

classification hep-ph
keywords antineutrinosreactorconusmodelneutrinoresultsstandardanalysis
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The observation of the Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS) process using reactor antineutrinos offers a unique opportunity to probe the Standard Model and explore Beyond the Standard Model scenarios. This study reports on the latest results from the CONUS+ experiment conducted at the Leibstadt nuclear power plant (KKL), Switzerland. The CONUS collaboration reports $395 \pm 106$ events detected from reactor antineutrinos with an exposure of 347 kg$\cdot$days, utilizing high-purity germanium detectors operated at sub-keV thresholds. A $\chi^2$-based statistical analysis was performed on these results, incorporating systematic uncertainties. This analysis was used to extract the weak mixing angle, establish a limit on the neutrino magnetic moment, and impose constraints on neutrino non-standard interactions using reactor antineutrinos. The results confirm the potential of CE$\nu$NS experiments in the study of fundamental neutrino properties and probing new physics.

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Forward citations

Cited by 9 Pith papers

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  1. Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment

    hep-ex 2025-12 conditional novelty 7.0

    LZ's new 5.7-tonne-year search reports a 4.5σ hint of solar 8B neutrino CEνNS and world-leading dark matter limits down to 5 GeV/c².

  2. Probing the Solar $^8$B Neutrino Fog with XENONnT

    hep-ex 2026-04 unverdicted novelty 6.0

    XENONnT measures solar 8B neutrino coherent scattering at 3.3 sigma, finds no light dark matter, and constrains the weak mixing angle at low momentum transfer.

  3. 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

    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.

  4. Elastic neutrino-electron scattering perspectives at nuclear reactors

    hep-ph 2026-02 conditional novelty 5.0

    Projections show CLOUD and TAO could improve low-energy weak mixing angle measurements to 8-11% via elastic neutrino-electron scattering, with competitive magnetic moment and NSI limits.

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

    hep-ph 2025-12 conditional novelty 5.0

    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.

  6. Refined extraction of electroweak and nuclear parameters from germanium CE$\nu$NS data

    hep-ph 2026-05 unverdicted novelty 4.0

    Combined fit of two germanium CEνNS datasets yields refined neutron radius, skin thickness, and sin²θ_W at low Q, presented versus Lindhard quenching variations and benchmarked against Shell Model form factors.

  7. New constraints on physics within and beyond the standard model from the latest CONUS datasets

    hep-ex 2026-05 conditional novelty 4.0

    New reactor antineutrino data from CONUS germanium detectors improve upper limits on neutrino magnetic moment to 5.18e-11 mu_B, millicharge to 1.76e-12 e0, NSI scale to 145 GeV, and yield sin^2 theta_W = 0.28 +0.03/-0...

  8. Generalized Neutrino Interactions: constraints and parametrizations

    hep-ph 2026-02 unverdicted novelty 4.0

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  9. Searching for generalized neutrino interactions in direct detection experiments with E{\nu}ES

    hep-ph 2025-10 conditional novelty 4.0

    Direct-detection xenon experiments yield new 90% C.L. constraints on vector, axial, scalar, and tensor generalized neutrino interactions, generally weaker than existing global bounds.