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

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

doi:10.1103/PhysRevLett.129.081801

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

Phys Rev Lett. 2022 Aug 19;129(8):081801. doi: 10.1103/PhysRevLett.129.081801.

Authors

D Akimov¹, P An^{2

3}, C Awe^{2

3}, P S Barbeau^{2

3}, B Becker⁴, V Belov^{1

5}, I Bernardi⁴, M A Blackston⁶, C Bock⁷, A Bolozdynya¹, J Browning⁸, B Cabrera-Palmer⁹, D Chernyak⁷, E Conley², J Daughhetee⁶, J Detwiler¹⁰, K Ding⁷, M R Durand¹⁰, Y Efremenko^{4

6}, S R Elliott¹¹, L Fabris⁶, M Febbraro⁶, A Gallo Rosso¹², A Galindo-Uribarri^{4

6}, M P Green^{3

6

8}, M R Heath⁶, S Hedges^{2

3}, D Hoang¹³, M Hughes¹⁴, T Johnson^{2

3}, A Khromov¹, A Konovalov^{1

5}, E Kozlova^{1

5}, A Kumpan¹, L Li^{2

3}, J M Link¹⁵, J Liu⁷, K Mann⁸, D M Markoff^{3

16}, J Mastroberti¹⁴, P E Mueller⁶, J Newby⁶, D S Parno¹³, S I Penttila⁶, D Pershey², R Rapp¹³, H Ray¹⁷, J Raybern², O Razuvaeva^{1

5}, D Reyna⁹, G C Rich³, J Ross^{3

16}, D Rudik¹, J Runge^{2

3}, D J Salvat¹⁴, A M Salyapongse¹³, K Scholberg², A Shakirov¹, G Simakov^{1

5}, G Sinev², W M Snow¹⁴, V Sosnovstsev¹, B Suh¹⁴, R Tayloe¹⁴, K Tellez-Giron-Flores¹⁵, I Tolstukhin¹⁴, E Ujah^{3

16}, J Vanderwerp¹⁴, R L Varner⁶, C J Virtue¹², G Visser¹⁴, T Wongjirad¹⁸, Y-R Yen¹³, J Yoo¹⁹, C-H Yu⁶, J Zettlemoyer¹⁴; COHERENT Collaboration

Affiliations

¹ National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow 115409, Russian Federation.
² Department of Physics, Duke University, Durham, North Carolina 27708, USA.
³ Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.
⁴ Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA.
⁵ Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre "Kurchatov Institute," Moscow 117218, Russian Federation.
⁶ Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
⁷ Physics Department, University of South Dakota, Vermillion, South Dakota 57069, USA.
⁸ Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA.
⁹ Sandia National Laboratories, Livermore, California 94550, USA.
¹⁰ Center for Experimental Nuclear Physics and Astrophysics, Department of Physics, University of Washington, Seattle, Washington 98195, USA.
¹¹ Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
¹² Department of Physics, Laurentian University, Sudbury, Ontario P3E 2C6, Canada.
¹³ Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
¹⁴ Department of Physics, Indiana University, Bloomington, Indiana 47405, USA.
¹⁵ Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia 24061, USA.
¹⁶ Department of Mathematics and Physics, North Carolina Central University, Durham, North Carolina 27707, USA.
¹⁷ Department of Physics, University of Florida, Gainesville, Florida 32611, USA.
¹⁸ Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155, USA.
¹⁹ Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea.

PMID: 36053683
DOI: 10.1103/PhysRevLett.129.081801

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 at Oak Ridge National Laboratory. New data collected before detector decommissioning have 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_{-25}^{+30})×10^{-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 nonstandard interactions while testing lepton flavor universality and measures the weak mixing angle as sin^{2}θ_{W}=0.220_{-0.026}^{+0.028} at Q^{2}≈(50 MeV)^{2}.