Phenomenological implications of the high-precision COHERENT germanium CEνNS data
Abstract
This work presents the first comprehensive phenomenological analysis of the newly released Coherent Elastic Neutrino-Nucleus Scattering (CEνNS) data on germanium, measured by the COHERENT collaboration at the Spallation Neutron Source. Leveraging the unprecedented precision of this dataset, we provide state-of-the-art determinations of key Standard Model and nuclear physics parameters. Specifically, we extract updated constraints on the weak mixing angle, the neutrino charge radii, and we perform a detailed extraction of the neutron root-mean-square radius of germanium nuclei. We also investigate the impact of quenching factor uncertainties by exploring an extended Lindhard framework, and assess their effect on the extraction of nuclear parameters. Additionally, we use these results to evaluate scenarios beyond the Standard Model, placing robust bounds on neutrino non-standard interactions. To maximize the statistical power and robustness of our findings, whenever possible, we perform a global combined analysis incorporating previous COHERENT measurements along with reactor antineutrino data from the CONUS+, TEXONO, and νGeN experiments as well as dark-matter experiments.
Versions
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BibTeX
@misc{corona2026phenomenological,
title = {{Phenomenological implications of the high-precision COHERENT germanium CE$ν$NS data}},
author = {M. Atzori Corona and M. Cadeddu and N. Cargioli and R. Cerulli and G. Co' and F. Dordei and C. Giunti and R. Pavarani},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2605.07975},
eprint = {2605.07975},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.07975},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Phenomenological implications of the high-precision COHERENT germanium CEνNS data
AU - M. Atzori Corona
AU - M. Cadeddu
AU - N. Cargioli
AU - R. Cerulli
AU - G. Co'
AU - F. Dordei
AU - C. Giunti
AU - R. Pavarani
PY - 2026
DA - 2026/09/03
PB - arXiv
DO - 10.48550/arxiv.2605.07975
UR - https://arxiv.org/abs/2605.07975
AB - This work presents the first comprehensive phenomenological analysis of the newly released Coherent Elastic Neutrino-Nucleus Scattering (CEνNS) data on germanium, measured by the COHERENT collaboration at the Spallation Neutron Source. Leveraging the unprecedented precision of this dataset, we provide state-of-the-art determinations of key Standard Model and nuclear physics parameters. Specifically, we extract updated constraints on the weak mixing angle, the neutrino charge radii, and we perform a detailed extraction of the neutron root-mean-square radius of germanium nuclei. We also investigate the impact of quenching factor uncertainties by exploring an extended Lindhard framework, and assess their effect on the extraction of nuclear parameters. Additionally, we use these results to evaluate scenarios beyond the Standard Model, placing robust bounds on neutrino non-standard interactions. To maximize the statistical power and robustness of our findings, whenever possible, we perform a global combined analysis incorporating previous COHERENT measurements along with reactor antineutrino data from the CONUS+, TEXONO, and νGeN experiments as well as dark-matter experiments.
ER -