Measurements of Cross Sections and Charged Pion Spectra in Proton-Carbon Interactions at 31 GeV/c

N. Abgrall, A. Aduszkiewicz, B. Andrieu, T. Anticic, N. Antoniou, J. Argyriades, A.G. Asryan, B. Baatar, A. Blondel, J. Blumer, M. Bogusz, L. Boldizsar, A. Bravar, W. Brooks, J. Brzychczyk, A. Bubak, S.A. Bunyatov, O. Busygina, T. Cetner, K.-U. ChoiP. Christakoglou, P. Chung, T. Czopowicz, N. Davis, F. Diakonos, S. Di Luise, W. Dominik, J. Dumarchez, R. Engel, A. Ereditato, L.S. Esposito, G.A. Feofilov, Z. Fodor, A. Ferrero, A. Fulop, X. Garrido, M. Ga dzicki, M. Golubeva, K. Grebieszkow, A. Grzeszczuk, F. Guber, H. Hakobyan, T. Hasegawa, S. Igolkin, A.S. Ivanov, Y. Ivanov, A. Ivashkin, K. Kadija, A. Kapoyannis, N. Katry ska, D. Kie czewska, D. Kikola, J.-H. Kim, M. Kirejczyk, J. Kisiel, T. Kobayashi, O. Kochebina, V.I. Kolesnikov, D. Kolev, V.P. Kondratiev, A. Korzenev, S. Kowalski, S. Kuleshov, A. Kurepin, R. Lacey, J. Lagoda, A. Laszlo, V.V. Lyubushkin, M. MacKowiak, Z. Majka, A.I. Malakhov, A. Marchionni, A. Marcinek, I. Maris, V. Marin, T. Matulewicz, V. Matveev, G.L. Melkumov, A. Meregaglia, M. Messina, S. Mrówczy ski, S. Murphy, T. Nakadaira, P.A. Naumenko, K. Nishikawa, T. Palczewski, G. Palla, A.D. Panagiotou, W. Peryt, O. Petukhov, R. P aneta, J. Pluta, B.A. Popov, M. Posiada a, S. Pu awski, W. Rauch, M. Ravonel, R. Renfordt, A. Robert, D. Röhrich, E. Rondio, B. Rossi, M. Roth, A. Rubbia, M. Rybczy ski, A. Sadovsky, K. Sakashita, T. Sekiguchi, P. Seyboth, M. Shibata, A.N. Sissakian, E. Skrzypczak, M. S odkowski, A.S. Sorin, P. Staszel, G. Stefanek, J. Stepaniak, C. Strabel, H. Ströbele, T. Susa, P. Szaflik, M. Szuba, M. Tada, A. Taranenko, R. Tsenov, R. Ulrich, M. Unger, M. Vassiliou, V.V. Vechernin, G. Vesztergombi, A. Wilczek, Z. W odarczyk, A. Wojtaszek, J.-G. Yi, I.-K. Yoo, W. Zipper

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Abstract

Interaction cross sections and charged pion spectra in p+C interactions at 31 GeV/c were measured with the large-acceptance NA61/SHINE spectrometer at the CERN SPS. These data are required to improve predictions of the neutrino flux for the T2K long-baseline neutrino oscillation experiment in Japan. A set of data collected during the first NA61/SHINE run in 2007 with an isotropic graphite target with a thickness of 4% of a nuclear interaction length was used for the analysis. The measured p+C inelastic and production cross sections are 257.2 ± 1.9 ± 8.9 and 229.3 ± 1.9 ± 9.0 mb, respectively. Inclusive production cross sections for negatively and positively charged pions are presented as functions of laboratory momentum in ten intervals of the laboratory polar angle covering the range from 0 up to 420 mrad. The spectra are compared with predictions of several hadron production models.
Original languageEnglish
Pages (from-to)034604_1-26
JournalPhysical Review C - Nuclear Physics
Volume84
Issue number3
DOIs
StatePublished - 2011

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