학술논문
Measurement of the Electron-Neutrino Charged-Current Cross Sections on ${}^{127}$I with the COHERENT NaI$\nu$E detector
Document Type
Working Paper
Author
An, P.; Awe, C.; Barbeau, P. S.; Becker, B.; Belov, V.; Bernardi, I.; Bock, C.; Bolozdynya, A.; Bouabid, R.; Brown, A.; Browning, J.; Cabrera-Palmer, B.; Cervantes, M.; 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.; Germer, A. C.; Green, M. P.; Hakenmüller, J.; Heath, M. R.; Hedges, S.; Hughes, M.; Johnson, B. A.; Johnson, T.; Khromov, A.; Konovalov, A.; Kozlova, E.; Kumpan, A.; Kyzylova, O.; Li, L.; Link, J. M.; Liu, J.; Mahoney, M.; Major, A.; Mann, K.; Markoff, D. M.; Mastroberti, J.; Mattingly, J.; Mueller, P. E.; Newby, J.; Parno, D. S.; Penttila, S. I.; Pershey, D.; Prior, C. G.; Rapp, R.; Ray, H.; Raybern, J.; Razuvaeva, O.; Reyna, D.; Rich, G. C.; Ross, J.; Rudik, D.; Runge, J.; Salvat, D. J.; Sander, J.; Scholberg, K.; Shakirov, A.; Simakov, G.; Sinev, G.; Skuse, C.; Snow, W. M.; Sosnovtsev, V.; Subedi, T.; Suh, B.; Tayloe, R.; Tellez-Giron-Flores, K.; Tsai, Y. -T.; Ujah, E.; Vanderwerp, J.; van Nieuwenhuizen, E. E.; Varner, R. L.; Virtue, C. J.; Visser, G.; Walkup, K.; Ward, E. M.; Wongjirad, T.; Yoo, J.; Yu, C. -H.; Zawada, A.; Zettlemoyer, J.; Zderic, A.
Source
Phys. Rev. Lett. 131, 221801 (2023)
Subject
Language
Abstract
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 ($\leq$ 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 $9.2^{+2.1}_{-1.8} \times 10^{-40}$ cm$^2$. This corresponds to a value that is $\sim$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 $5.2^{+3.4}_{-3.1} \times 10^{-40}$ and $2.2^{+3.5}_{-2.2} \times 10^{-40}$ cm$^2$, respectively.
Comment: 10 pages, 7 figures
Comment: 10 pages, 7 figures