학술논문
First detection of coherent elastic neutrino-nucleus scattering on germanium
Document Type
Working Paper
Author
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.
Source
Subject
Language
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.
Comment: 7 pages, 5 figures
Comment: 7 pages, 5 figures