159 articles – 2004 Notices  [english version]
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Astroparticle Physics 30 (2008) 124-132
Forward π production in p O2 and p N2 interactions at 12 GeV/c
M. G. Catanesi, E. Radicioni, R. Edgecock, M. Ellis, C. Gößling, S. Bunyatov, A. Krasnoperov, B. Popov1, V. Tereschenko, E. Di Capua, G. Vidal-Sitjes, A. Artamonov, S. Giani, S. Gilardoni, P. Gorbunov, A. Grant, A. Grossheim, A. Ivanchenko, V. Ivanchenko, A. Kayis-Topaksu, J. Panman, I. Papadopoulos, E. Tcherniaev, I. Tsukerman, C. Wiebusch, P. Zucchelli, A. Blondel, S. Borghi, M. C. Morone, G. Prior, R. Schroeter, C. Meurer, U. Gastaldi, G. B. Mills, J. S. Graulich, G. Grégoire, M. Bonesini, F. Ferri, M. Kirsanov, A. Bagulya, V. Grichine, N. Polukhina, V. Palladino, L. Coney, D. Schmitz, G. Barr, F. Bobisut, D. Gibin, A. Guglielmi, M. Mezzetto, J. Dumarchez1, U. Dore, D. Orestano, F. Pastore, A. Tonazzo2, L. Tortora, C. Booth, L. Howlett, M. Bogomilov, D. Kolev, R. Tsenov, S. Piperov, P. Temnikov, M. Apollonio, P. Chimenti, G. Giannini, J. Burguet-Castell, A. Cervera-Villanueva, J. J. Gómez-Cadenas, J. Martín-Albo, M. Sorel
HARP Collaboration(s)

Measurements of double-differential charged pion production cross-sections in interactions of 12 GeV/c protons on O2 and N2 thin targets are presented in the kinematic range 0.5 GeV/c ⩽pπ<8 GeV/c and 50 mrad ⩽θπ<250 mrad (in the laboratory frame) and are compared with p C results. For p N2 (p O2) interactions the analysis is performed using 38576 (7522) reconstructed secondary pions. The analysis uses the beam instrumentation and the forward spectrometer of the HARP experiment at CERN PS. The measured cross-sections have a direct impact on the precise calculation of atmospheric neutrino fluxes and on the improved reliability of extensive air shower simulations by reducing the uncertainties of hadronic interaction models in the low energy range. In particular, the present results allow the common hypothesis that p C data can be used to predict the p N2 and p O2 pion production cross-sections to be tested.
1 :  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
2 :  APC - UMR 7164 - AstroParticule et Cosmologie
APC - Neutrinos
Physique/Physique des Hautes Energies - Expérience

Planète et Univers/Astrophysique/Instrumentation et méthodes pour l'astrophysique

Physique/Astrophysique/Instrumentation et méthodes pour l'astrophysique
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