2023 journal article

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Measurement of Electron-Neutrino Charged-Current Cross Sections on <SUP>127</SUP>I with the COHERENT NaIνE Detector

PHYSICAL REVIEW LETTERS, 131(22).

By: P. An^*, C. Awe^*, P. Barbeau, B. Becker^*, V. Belov^*, I. Bernardi^*, C. Bock ^*, A. Bolozdynya^* ...and 81 other authors, including 3 NC State authors, R. Bouabid^*, A. Brown ^*, J. Browning ⁿ, B. Cabrera-Palmer^*, M. Cervantes^*, E. Conley^*, J. Daughhetee^*, J. Detwiler^*, K. Ding ^*, M. Durand^*, Y. Efremenko^*, S. Elliott^*, L. Fabris^*, M. Febbraro^*, A. Rosso ^*, A. Galindo-Uribarri ^*, A. Germer^*, M. Green , J. Hakenmueller, M. Heath ^*, S. Hedges ^*, M. Hedges, B. Johnson ^*, T. Johnson^*, A. Khromov^*, A. Konovalov ^*, E. Kozlova^*, A. Kumpan ^*, O. Kyzylova^*, L. Li^*, J. Link ^*, J. Liu ^*, M. Mahoney^*, A. Major^*, K. Mann  ⁿ, D. Markoff ^*, J. Mastroberti^*, J. Mattingly ⁿ, P. Mueller ^*, J. Newby ^*, D. Parno ^*, S. Penttila^*, D. Pershey^*, C. Prior ^*, R. Rapp ^*, H. Ray^*, J. Raybern^*, O. Razuvaeva^*, D. Reyna^*, G. Rich ^*, J. Ross ^*, D. Rudik ^*, J. Runge ^*, D. Salvat ^*, J. Sander^*, K. Scholberg^*, A. Shakirov^*, G. Simakov^*, G. Sinev, C. Skuse^*, W. Snow ^*, V. Sosnovtsev, T. Subedi ^*, B. Suh^*, R. Tayloe^*, K. Tellez-Giron-Flores^*, Y. Tsai ^*, E. Ujah^*, J. Vanderwerp^*, E. Nieuwenhuizen^*, R. Varner ^*, C. Virtue^*, G. Visser^*, K. Walkup^*, E. Ward ^*, T. Wongjirad ^*, J. Yoo ^*, C. Yu ^*, A. Zawada^*, J. Zettlemoyer^*, A. Zderic^*(hide authors)

10.1103/PhysRevLett.131.221801

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Source: Web Of Science

Added: February 19, 2024

Using an 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on ^{127}I with pion decay-at-rest neutrinos produced by the Spallation Neutron Source at Oak Ridge National Laboratory. Iodine is one the heaviest targets for which low-energy (≤50  MeV) inelastic neutrino-nucleus processes have been measured, and this is the first measurement of its inclusive cross section. After a five-year detector exposure, COHERENT reports a flux-averaged cross section for electron neutrinos of 9.2_{-1.8}^{+2.1}×10^{-40}  cm^{2}. This corresponds to a value that is ∼41% lower than predicted using the MARLEY event generator with a measured Gamow-Teller strength distribution. In addition, the observed visible spectrum from charged-current scattering on ^{127}I has been measured between 10 and 55 MeV, and the exclusive zero-neutron and one-or-more-neutron emission cross sections are measured to be 5.2_{-3.1}^{+3.4}×10^{-40} and 2.2_{-0.5}^{+0.4}×10^{-40}  cm^{2}, respectively.