Exploring the Standard Model and Beyond from the Evidence of CE$\nu$NS with Reactor Antineutrinos in CONUS+

M. Alpízar-Venegas; L. J. Flores; Eduardo Peinado; E. Vázquez-Jáuregui

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arXiv · 2501.10355

Exploring the Standard Model and Beyond from the Evidence of CE$\nu$NS with Reactor Antineutrinos in CONUS+

M. Alpízar-Venegas·L. J. Flores·Eduardo Peinado·E. Vázquez-Jáuregui

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Abstract

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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M. Alpízar-Venegas, L. J. Flores, Eduardo Peinado, E. Vázquez-Jáuregui. 2025-01-17. Exploring the Standard Model and Beyond from the Evidence of CE$\nu$NS with Reactor Antineutrinos in CONUS+. https://arxiv.org/abs/2501.10355

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