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arxiv: 1102.0983 · v3 · pith:5KNOE4OCnew · submitted 2011-02-04 · ✦ hep-ex

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
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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. Choi P. 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. Gazdzicki 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. Katrynska D. Kielczewska 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 St. Mrowczynski S. Murphy T. Nakadaira P. A. Naumenko K. Nishikawa T. Palczewski G. Palla A. D. Panagiotou W. Peryt O. Petukhov R. Planeta J. Pluta B. A. Popov M. Posiadala S. Pulawski W. Rauch M. Ravonel R. Renfordt A. Robert D. Rohrich E. Rondio B. Rossi M. Roth A. Rubbia M. Rybczynski A. Sadovsky K. Sakashita T. Sekiguchi P. Seyboth M. Shibata A. N. Sissakian E. Skrzypczak M. Slodkowski A. S. Sorin P. Staszel G. Stefanek J. Stepaniak C. Strabel H. Strobele 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. Wlodarczyk A. Wojtaszek J.-G. Yi I.-K. Yoo W. Zipper (NA61/SHINE Collaboration)
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classification ✦ hep-ex
keywords crosssectionschargedproductionspectradatainteractioninteractions
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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 mb and 229.3 +- 1.9 +- 9.0 mb, respectively. Inclusive production cross sections for negatively and positively charged pions are presented as a function of laboratory momentum in 10 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.

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