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First detection of coherent elastic neutrino-nucleus scattering on germanium

Authors :
Adamski, S.
Ahn, M.
Barbeau, P. S.
Belov, V.
Bernardi, I.
Bock, C.
Bolozdynya, A.
Bouabid, R.
Browning, J.
Cabrera-Palmer, B.
Cedarblade-Jones, N.
Rivera, J. Colón
Conley, E.
da Silva, V.
Daughhetee, J.
Detwiler, J.
Ding, K.
Durand, M. R.
Efremenko, Y.
Elliott, S. R.
Erlandson, A.
Fabris, L.
Galindo-Uribarri, A.
Green, M. P.
Hakenmüller, J.
Heath, M. R.
Hedges, S.
Jeong, H.
Johnson, B. A.
Johnson, T.
Jones, H.
Khromov, A.
Konovalov, A.
Kozlova, E.
Kumpan, A.
Kyzylova, O.
Lee, Y.
Li, G.
Li, L.
Link, J. M.
Liu, J.
Luxnat, M.
Major, A.
Mann, K.
Markoff, D. M.
Mattingly, J.
Moye, J.
Mueller, P. E.
Newby, J.
Ogoi, N.
O'Reilly, J.
Parno, D. S.
Pérez-Loureiro, D.
Pershey, D.
Prior, C. G.
Queen, J.
Rapp, R.
Ray, H.
Razuvaeva, O.
Reyna, D.
Rich, G. C.
Rudik, D.
Runge, J.
Salvat, D. J.
Sander, J.
Scholberg, K.
Shakirov, A.
Simakov, G.
Snow, W. M.
Sosnovtsev, V.
Stringer, M.
Subedi, T.
Suh, B.
Sur, B.
Tayloe, R.
Tellez-Giron-Flores, K.
Tsai, Y. -T.
van Nieuwenhuizen, E. E.
Virtue, C. J.
Visser, G.
Walkup, K.
Ward, E. M.
Wongjirad, T.
Yang, Y.
Yoo, J.
Yu, C. -H.
Zaalishvili, A.
Publication Year :
2024

Abstract

We report the first detection of coherent elastic neutrino-nucleus scattering (CEvNS) on germanium, measured at the Spallation Neutron Source at Oak Ridge National Laboratory. The Ge-Mini detector of the COHERENT collaboration employs large-mass, low-noise, high-purity germanium spectrometers, enabling excellent energy resolution, and an analysis threshold of 1.5 keV electron-equivalent ionization energy. We observe a on-beam excess of 20.6$_{+7.1}^{-6.3}$ counts with a total exposure of 10.22 GWhkg and we reject the no-CEvNS hypothesis with 3.9 sigma significance. The result agrees with the predicted standard model of particle physics signal rate within 2 sigma.<br />Comment: 7 pages, 5 figures

Subjects

Subjects :
High Energy Physics - Experiment

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2406.13806
Document Type :
Working Paper

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