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arXiv · 2003.10630

First Measurement of Coherent Elastic Neutrino-Nucleus Scattering on Argon

COHERENT Collaboration·D. Akimov·J. B. Albert·P. An·C. Awe·P. S. Barbeau·B. Becker·V. Belov·M. A. Blackston·L. Blokland·A. Bolozdynya·B. Cabrera-Palmer·N. Chen·D. Chernyak·E. Conley·R. L. Cooper·J. Daughhetee·M. del Valle Coello·J. A. Detwiler·M. R. Durand·Y. Efremenko·S. R. Elliott·L. Fabris·M. Febbraro·W. Fox·A. Galindo-Uribarri·M. P. Green·K. S. Hansen·M. R. Heath·S. Hedges·M. Hughes·T. Johnson·M. Kaemingk·L. J. Kaufman·A. Khromov·A. Konovalov·E. Kozlova·A. Kumpan·L. Li·J. T. Librande·J. M. Link·J. Liu·K. Mann·D. M. Markoff·O. McGoldrick·H. Moreno·P. E. Mueller·J. Newby·D. S. Parno·S. Penttila·D. Pershey·D. 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·J. Yang·Y. -R. Yen·J. Yoo·C. -H. Yu·J. Zettlemoyer
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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 $3σ$ 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. 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 non-standard neutrino interactions.

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COHERENT Collaboration, D. Akimov, J. B. Albert, P. An, C. Awe, P. S. Barbeau, B. Becker, V. Belov, M. A. Blackston, L. Blokland, A. Bolozdynya, B. Cabrera-Palmer, N. Chen, D. Chernyak, E. Conley, R. L. Cooper, J. Daughhetee, M. del Valle Coello, J. A. Detwiler, M. R. Durand, Y. Efremenko, S. R. Elliott, L. Fabris, M. Febbraro, W. Fox, A. Galindo-Uribarri, M. P. Green, K. S. Hansen, M. R. Heath, S. Hedges, M. Hughes, T. Johnson, M. Kaemingk, L. J. Kaufman, A. Khromov, A. Konovalov, E. Kozlova, A. Kumpan, L. Li, J. T. Librande, J. M. Link, J. Liu, K. Mann, D. M. Markoff, O. McGoldrick, H. Moreno, P. E. Mueller, J. Newby, D. S. Parno, S. Penttila, D. Pershey, D. 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, J. Yang, Y. -R. Yen, J. Yoo, C. -H. Yu, J. Zettlemoyer. 2021-02-15. First Measurement of Coherent Elastic Neutrino-Nucleus Scattering on Argon. https://doi.org/10.1103/physrevlett.126.012002

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