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High significance measurement of reactor coherent elastic neutrino-nucleus scattering on germanium by CONUS+
Abstract
We report the most precise measurement to date of coherent elastic neutrino-nucleus scattering (CEνNS) from reactor antineutrinos using the CONUS+ high-purity germanium detectors at the Leibstadt nuclear power plant. With an exposure of 1296 kg·days reactor-on, a blind likelihood analysis yields 1555 ± 152 CEνNS events, with a significance of 10.2 σ, in agreement with the Standard Model expectation of 1701 ± 198 events within 0.6 standard deviations. The result also determines the weak mixing angle at a momentum transfer of about 10 MeV, sin2θW = 0.225 ± 0.022, consistent with the Standard Model prediction.
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BibTeX
@misc{ackermann2026high,
title = {{High significance measurement of reactor coherent elastic neutrino-nucleus scattering on germanium by CONUS+}},
author = {N. Ackermann and H. Bonet and C. Buck and J. Hakenmüller and G. Heusser and M. Lindner and W. Maneschg and M. Meier and S. Mertens and D. Piani and M. Rank and T. Rink and E. Sánchez García and Y. Shi and L. Schönfeld and I. Stalder and H. Strecker and J. Wendel and J. Woenckhaus},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.37318},
eprint = {2610.37318},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.37318},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - High significance measurement of reactor coherent elastic neutrino-nucleus scattering on germanium by CONUS+
AU - N. Ackermann
AU - H. Bonet
AU - C. Buck
AU - J. Hakenmüller
AU - G. Heusser
AU - M. Lindner
AU - W. Maneschg
AU - M. Meier
AU - S. Mertens
AU - D. Piani
AU - M. Rank
AU - T. Rink
AU - E. Sánchez García
AU - Y. Shi
AU - L. Schönfeld
AU - I. Stalder
AU - H. Strecker
AU - J. Wendel
AU - J. Woenckhaus
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2610.37318
UR - https://arxiv.org/abs/2610.37318
AB - We report the most precise measurement to date of coherent elastic neutrino-nucleus scattering (CEνNS) from reactor antineutrinos using the CONUS+ high-purity germanium detectors at the Leibstadt nuclear power plant. With an exposure of 1296 kg·days reactor-on, a blind likelihood analysis yields 1555 ± 152 CEνNS events, with a significance of 10.2 σ, in agreement with the Standard Model expectation of 1701 ± 198 events within 0.6 standard deviations. The result also determines the weak mixing angle at a momentum transfer of about 10 MeV, sin^2θ_W = 0.225 ± 0.022, consistent with the Standard Model prediction.
ER -