Measurement of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Pb</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mi>n</mml:mi><mml:mi>a</mml:mi><mml:mi>t</mml:mi></mml:mrow></mml:mmultiscripts><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mi>e</mml:mi></mml:mrow></mml:msub><mml:mo>,</mml:mo><mml:mi mathvariant="normal">X</mml:mi><mml:mi>n</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math> production with a stopped-pion neutrino source
P. An, C. Awe, P. S. Barbeau, B. Becker, S. W. Belling, V. Belov, I. Bernardi, C. Bock, A. Bolozdynya, R. Bouabid, A. Brown, J. Browning, B. Cabrera-Palmer, M. Cervantes, 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, J. Hakenmüller, M. R. Heath, S. Hedges, M. Hughes, B. A. Johnson, T. Johnson, A. Khromov, A. Konovalov, E. Kozlova, A. Kumpan, O. Kyzylova, L. Li, J. M. Link, J. Liu, A. Major, K. Mann, D. M. Markoff, J. Mastroberti, J. Mattingly, K. Miller, P. E. Mueller, J. Newby, D. S. Parno, S. I. Penttila, D. Pershey, C. G. Prior, 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, J. Sander, K. Scholberg, A. Shakirov, G. Simakov, G. Sinev, W. M. Snow, V. Sosnovtsev, T. Subedi, B. Suh, R. Tayloe, K. Tellez-Giron-Flores, E. Ujah, J. Vanderwerp, E. E. van Nieuwenhuizen, R. L. Varner, C. J. Virtue, G. Visser, K. Walkup, E. M. Ward, T. Wongjirad, J. Yoo, C.-H. Yu, J. Zettlemoyer
Abstract
Using neutrinos produced at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL), the COHERENT collaboration has studied the $\mathrm{Pb}({\ensuremath{\nu}}_{e},\mathrm{X}n)$ process with a lead neutrino-induced-neutron (NIN) detector. Data from this detector are fit jointly with previously collected COHERENT data on this process. A combined analysis of the two datasets yields a cross section that is ${0.29}_{\ensuremath{-}0.16}^{+0.17}$ times that predicted by the MARLEY event generator using experimentally-measured Gamow-Teller strength distributions, consistent with no NIN events at $1.8\ensuremath{\sigma}$. This is the first inelastic neutrino-nucleus process COHERENT has studied, among several planned exploiting the high flux of low-energy neutrinos produced at the SNS.