364 articles – 2948 Notices  [english version]
 HAL : in2p3-00750280, version 1
 arXiv : 1211.0469
 Physical Review D 87 (2013) 012001
 The T2K Neutrino Flux Prediction
 K. Abe, D. Autiero1, J. Dumarchez2, S. Emery3, V. Galymov3, C. Giganti2, M. Gonin4, M. Macaire3, J. Marteau1, E. Mazzucato3, T. Mueller4, B. Popov2, B. Quilain4, G. Vasseur3, L. Zambelli2, M. Zito3
 T2K Collaboration(s)
 (2013)
 The Tokai-to-Kamioka (T2K) experiment studies neutrino oscillations using an off-axis muon neutrino beam with a peak energy of about 0.6 GeV that originates at the J-PARC accelerator facility. Interactions of the neutrinos are observed at near detectors placed at 280 m from the production target and at the far detector -- Super-Kamiokande (SK) -- located 295 km away. The flux prediction is an essential part of the successful prediction of neutrino interaction rates at the T2K detectors and is an important input to T2K neutrino oscillation and cross section measurements. A FLUKA and GEANT3 based simulation models the physical processes involved in the neutrino production, from the interaction of primary beam protons in the T2K target, to the decay of hadrons and muons that produce neutrinos. The simulation uses proton beam monitor measurements as inputs. The modeling of hadronic interactions is re-weighted using thin target hadron production data, including recent charged pion and kaon measurements from the NA61/SHINE experiment. For the first T2K analyses the uncertainties on the flux prediction are evaluated to be below 15% near the flux peak. The uncertainty on the ratio of the flux predictions at the far and near detectors is less than 2% near the flux peak.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1211.0469
 in2p3-00750280, version 1 http://hal.in2p3.fr/in2p3-00750280 oai:hal.in2p3.fr:in2p3-00750280 Contributeur : Dominique Girod <> Soumis le : Vendredi 9 Novembre 2012, 13:39:33 Dernière modification le : Mercredi 23 Janvier 2013, 15:37:39