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

2025/01/17 by Alpízar-Venegas, M., Flores, L. J., Peinado, Eduardo +1 · 3 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2501.10355

Abstract

The observation of the Coherent Elastic Neutrino-Nucleus Scattering (CEνNS) 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 ± 106 events detected from reactor antineutrinos with an exposure of 347 kg⋅days, utilizing high-purity germanium detectors operated at sub-keV thresholds. A χ²-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 CEνNS experiments in the study of fundamental neutrino properties and probing new physics.

Cited by

• Testing lepton non-unitarity with the next generation of (Germanium-based) CEνNS reactor experiments
• Searching for generalized neutrino interactions in direct detection experiments with EνES
• Toward precision physics tests with future COHERENT detectors

Related

• Coherent elastic neutrino-nucleus scattering -- First constraints/observations and future potential
• Reactor antineutrinos CEνNS on germanium: CONUS+ and TEXONO as a new gateway to SM and BSM physics
• Direct observation of coherent elastic antineutrino-nucleus scattering
• The CONUS+ experiment
• Background characterization of the CONUS+ experimental location