Accès ouvert déclaré
2020
preprint
First Detection of Coherent Elastic Neutrino-Nucleus Scattering on Argon
D. Akimov, J. B. Albert, Peng An, C. Awe, P.S. Barbeau, B. Becker, V. Belov, M. A. Blackston, L. Blokland, A. Bolozdynya, Belkis Cabrera-Palmer, N. Chen, D. Chernyak, E. Conley, R. L. Cooper, J. Daughhetee, M. del Valle Coello, J. A. Detwiler, M. Durand, Y. Efremenko, S. R. Elliott, L. Fabris, M. Febbraro, W. Fox, A. Galindo-Uribarri, M.P. Green, Kurt Schaldemose Hansen, M. R. Heath, S. Hedges, M. Hughes, T. Johnson, M. Kaemingk, L. J. Kaufman, А. В. Хромов, A. M. Konovalov, E. Kozlova, A. Kumpan, L. Li, J.T. Librande, J. M. Link, J. Liu, Kulwinder Singh Mann, D. M. Markoff, O. McGoldrick, H. Moreno, P.E. Mueller, J. Newby, D. S. Parno, S. Penttilä, D. Pershey, D. C. Radford, R. Rapp, H. Ray, J. Raybern, O. Razuvaeva, D. Reyna, G. C. Rich, D. Rudik, J. Runge, D. J. Salvat, K. Scholberg, A. Shakirov, G. Simakov, G. Sinev, W. M. Snow, V. Sosnovtsev, B. Suh, R. Tayloe, K. Tellez-Giron-Flores, R. T. Thornton, I. Tolstukhin, J. Vanderwerp, R. L. Varner, C. J. Virtue, G. Visser, C. Wiseman, T. Wongjirad, Junjie Yang, Y.-R. Yen, J. Yoo, C.-H. Yu, J. Zettlemoyer
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Le résumé fourni par la source
We report the first detection of coherent elastic neutrino-nucleus scattering (CEvNS) on argon using the CENNS-10 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 ($2.2 \pm 0.7) \times 10^{-39}$ cm$^2$ -- consistent with the standard model prediction. This is the lightest nucleus for which CEvNS has been observed, which allows us to verify the expected neutron-number dependence of the cross section and to better constrain non-standard neutrino interactions.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Dark Matter and Cosmic PhenomenaNeutrino Physics ResearchQuantum, superfluid, helium dynamics