First Measurement of Coherent Elastic Neutrino-Nucleus Scattering on Argon

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First Measurement of Coherent Elastic Neutrino-Nucleus Scattering on Argon

Cited 139 time in Web of Science Cited 167 time in Scopus

Authors: Akimov, D.; Albert, J. B.; An, P.; Awe, C.; Barbeau, P. S.; Becker, B.; Belov, V; Bernardi, I; Blackston, M. A.; Blokland, L.; Bolozdynya, A.; Cabrera-Palmer, B.; Chen, N.; Chernyak, D.; Conley, E.; Cooper, R. L.; Daughhetee, J.; Coello, M. del Valle; Detwiler, J. A.; Durand, M. R.; Efremenko, Y.; Elliott, S. R.; Fabris, L.; Febbraro, M.; Fox, W.; Galindo-Uribarri, A.; Rosso, A. Gallo; Green, M. P.; Hansen, K. S.; Heath, M. R.; Hedges, S.; Hughes, M.; Johnson, T.; Kaemingk, M.; Kaufman, L. J.; Khromov, A.; Konovalov, A.; Kozlova, E.; Kumpan, A.; Li, L.; Librande, J. T.; Link, J. M.; Liu, J.; Mann, K.; Markoff, D. M.; McGoldrick, O.; Moreno, H.; Mueller, P. E.; Newby, J.; Parno, D. S.; Penttila, S.; Pershey, D.; Radford, D.; Rapp, R.; Ray, H.; Raybern, J.; Razuvaeva, O.; Reyna, D.; Rich, G. C.; Rudik, D.; Runge, J.; Salvat, D. J.; Scholberg, K.; Shakirov, A.; Simakov, G.; Sinev, G.; Snow, W. M.; Sosnovtsev, V; Suh, B.; Tayloe, R.; Tellez-Giron-Flores, K.; Thornton, R. T.; Tolstukhin, I; Vanderwerp, J.; Varner, R. L.; Virtue, C. J.; Visser, G.; Wiseman, C.; Wongjirad, T.; Yang, J.; Yen, Y-R; Yoo, J.; Yu, C-H; Zettlemoyer, J.

Abstract: We report the first measurement of coherent elastic neutrino-nucleus scattering (CEvNS) on argon using a liquid argon detector at the Oak Ridge National Laboratory Spallation Neutron Source. Two independent analyses prefer CEvNS over the background-only null hypothesis with greater than 3 sigma significance. The measured cross section, averaged over the incident neutrino flux, is (2.2 +/- 0.7) x 10(-39) cm(2)-consistent with the standard model prediction. The neutron-number dependence of this result, together with that from our previous measurement on CsI, confirms the existence of the CEvNS process and provides improved constraints on nonstandard neutrino interactions.

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