Browsing by Author "Bouabid, R."

Now showing 1 - 3 of 3
  • Thumbnail Image
    COHERENT constraint on leptophobic dark matter using CsI data
    Akimov, D.; An, P.; Awe, C.; Barbeau, P. S.; Becker, B.; Belov, V.; Bernardi, I.; Blackston, M. A.; Bock, C.; Bolozdynya, A.; Bouabid, R.; 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, B. A.; Johnson, T.; Khromov, A.; Konovalov, A.; Kozlova, E.; Kumpan, A.; Li, L.; Link, Jonathan M.; Liu, J.; 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.; Rapp, R.; Ray, H.; Razuvaeva, O.; Reyna, D.; Rich, G. C.; Ross, J.; Rudik, D.; Runge, J.; Salvat, D. J.; Salyapongse, A. M.; Sander, J.; Scholberg, K.; Shakirov, A.; Simakov, 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. (American Physical Society, 2022-09-14)
    We use data from the COHERENT CsI[Na] scintillation detector to constrain sub-GeV leptophobic dark matter models. This detector was built to observe low-energy nuclear recoils from coherent elastic neutrino-nucleus scattering. These capabilities enable searches for dark matter particles produced at the Spallation Neutron Source mediated by a vector portal particle with masses between 2 and 400 MeV/c2. No evidence for dark matter is observed and a limit on the mediator coupling to quarks is placed. This constraint improves upon previous results by two orders of magnitude. This newly explored parameter space probes the region where the dark matter relic abundance is explained by leptophobic dark matter when the mediator mass is roughly twice the dark matter mass. COHERENT sets the best constraint on leptophobic dark matter at these masses.
  • Thumbnail Image
    Measurement of natPb(νe,Xn) production with a stopped-pion neutrino source
    An, P.; Awe, C.; Barbeau, P. S.; Becker, B.; Belling, S. W.; 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.; Green, M. P.; Hakenmueller, 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, Jonathan M.; Liu, J.; Major, A.; Mann, K.; Markoff, D. M.; Mastroberti, J.; Mattingly, J.; Miller, K.; 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.; Salyapongse, A. M.; Sander, J.; Scholberg, K.; Shakirov, A.; Simakov, G.; Sinev, G.; Snow, W. M.; Sosnovtsev, V.; Subedi, T.; Suh, B.; Tayloe, R.; Tellez-Giron-Flores, K.; Ujah, E.; Vanderwerp, J.; Nieuwenhuizen, EE van E. V.; Varner, R. L.; Virtue, C. J.; Visser, G.; Walkup, K.; Ward, E. M.; Wongjirad, T.; Yoo, J.; Yu, C. -H.; Zettlemoyer, J. (American Physical Society, 2023-10-03)
    Using neutrinos produced at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL), the COHERENT collaboration has studied the Pb(νe,Xn) 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 0.29-0.16+0.17 times that predicted by the MARLEY event generator using experimentally-measured Gamow-Teller strength distributions, consistent with no NIN events at 1.8σ. 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.
  • Thumbnail Image
    Measurement of Electron-Neutrino Charged-Current Cross Sections on I 127 with the COHERENT NaIν E Detector
    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.; Gallo Rosso, A.; 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, Jonathan 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. (American Physical Society, 2023-11-29)
    Using an 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on I127 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 cm2. 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 I127 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 cm2, respectively.