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Measurement of the Coherent Elastic Neutrino-Nucleus Scattering Cross Section on CsI by COHERENT

Authors :
Akimov, D.
An, P.
Awe, C.
Barbeau, P. S.
Becker, B.
Belov, V.
Bernardi, I.
Blackston, M. A.
Bock, C.
Bolozdynya, A.
Browning, J.
Cabrera-Palmer, B.
Chernyak, D.
Conley, E.
Daughhetee, J.
Detwiler, J.
Ding, K.
Durand, M. R.
Efremenko, Y.
Elliott, S. R.
Fabris, L.
Febbraro, M.
Rosso, A. Gallo
Galindo-Uribarri, A.
Green, M. P.
Heath, M. R.
Hedges, S.
Hoang, D.
Hughes, M.
Johnson, T.
Khromov, A.
Konovalov, A.
Kozlova, E.
Kumpan, A.
Li, L.
Link, J. M.
Liu, J.
Mann, K.
Markoff, D. M.
Mastroberti, J.
Mueller, P. E.
Newby, J.
Parno, D. S.
Penttila, S. I.
Pershey, D.
Rapp, R.
Ray, H.
Raybern, J.
Razuvaeva, O.
Reyna, D.
Rich, G. C.
Ross, J.
Rudik, D.
Runge, J.
Salvat, D. J.
Salyapongse, A. M.
Scholberg, K.
Shakirov, A.
Simakov, G.
Sinev, G.
Snow, W. M.
Sosnovstsev, V.
Suh, B.
Tayloe, R.
Tellez-Giron-Flores, K.
Tolstukhin, I.
Ujah, E.
Vanderwerp, J.
Varner, R. L.
Virtue, C. J.
Visser, G.
Wongjirad, T.
Yen, Y. -R.
Yoo, J.
Yu, C. -H.
Zettlemoyer, J.
Publication Year :
2021

Abstract

We measured the cross section of coherent elastic neutrino-nucleus scattering (\cevns{}) using a CsI[Na] scintillating crystal in a high flux of neutrinos produced at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory. New data collected before detector decommissioning has more than doubled the dataset since the first observation of \cevns{}, achieved with this detector. Systematic uncertainties have also been reduced with an updated quenching model, allowing for improved precision. With these analysis improvements, the COHERENT collaboration determined the cross section to be $(165^{+30}_{-25})\times10^{-40}$~cm$^2$, consistent with the standard model, giving the most precise measurement of \cevns{} yet. The timing structure of the neutrino beam has been exploited to compare the \cevns{} cross section from scattering of different neutrino flavors. This result places leading constraints on neutrino non-standard interactions while testing lepton flavor universality and measures the weak mixing angle as $\sin^2\theta_{W}=0.220^{+0.028}_{-0.026}$ at $Q^2\approx(50\text{ MeV})^2$

Subjects

Subjects :
High Energy Physics - Experiment

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2110.07730
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevLett.129.081801