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

Bibliographic Details
Title: Exploring the Standard Model and Beyond from the Evidence of CE$\nu$NS with Reactor Antineutrinos in CONUS+
Authors: Alpízar-Venegas, M., Flores, L. J., Peinado, Eduardo, Vázquez-Jáuregui, E.
Publication Year: 2025
Collection: High Energy Physics - Phenomenology
Subject Terms: High Energy Physics - Phenomenology
More Details: 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.
Comment: 5 pages, 3 figures. The analysis was updated with the latest data reported by the CONUS collaboration, and some citations were added. This version matches the publication in Physical Review D
Document Type: Working Paper
Access URL: http://arxiv.org/abs/2501.10355
Accession Number: edsarx.2501.10355
Database: arXiv
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