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Article
Report number arXiv:0802.0657 ; CERN-PH-EP-2008-006 ; CERN-PH-EP-2008-006
Title Measurement of the production cross-sections of π± in p-C and π±-C interactions at 12 GeV/c
Author(s) HARP Collaboration  Mostrar todos los 84 autores
Affiliation (Univ. degli Studi e Sezione INFN, Bari, Italy) ; (Rutherford Appleton Laboratory, Chilton, Didcot, UK) ; (Institut fur Physik, Universit¨at Dortmund, Germany) ; (Joint Institute for Nuclear Research, JINR Dubna, Russia) ; (Univ. degli Studi e Sezione INFN, Ferrara, Italy) ; (Forschungszentrum Karlsruhe, Institut fur Kernphysik, Karlsruhe, Germany) ; (Geneva U.) ; (Univ. Kyoto, Japan) ; (Laboratori Nazionali di Legnaro dell'INFN, Legnaro, Italy) ; (Los Alamos National Laboratory, Los Alamos, USA) ; (Institut de Physique Nucl´eaire, UCL, Louvain-la-Neuve, Belgium) ; (Univ. degli Studi e Sezione INFN, Milano, Italy) ; (Institute for Nuclear Research, Moscow, Russia) ; (P. N. Lebedev Institute of Physics (FIAN), Russian Academy of Sciences, Moscow, Russia) ; (Univ. "Federico II" e Sezione INFN, Napoli, Italy) ; (Columbia Univ., New York, USA) ; (Nuclear and Astrophysics Laboratory, University of Oxford, UK) ; (Univ. degli Studi e Sezione INFN, Padova, Italy) ; (LPNHE, Universités de Paris VI et VII, Paris, France) ; (Univ. "La Sapienza" e Sezione INFN Roma I, Roma, Italy) ; (Univ. degli Studi e Sezione INFN Roma III, Roma, Italy) ; (Univ. Sheffield, UK) ; (Faculty of Physics, St. Kliment Ohridski University, Sofia, Bulgaria) ; (Institute for Nuclear Research and Nuclear Energy, Academy of Sciences, Sofia, Bulgaria) ; (Univ. degli Studi e Sezione INFN, Trieste, Italy) ; (Instituto de Física Corpuscular, IFIC, CSIC and Universidad de Valencia, Spain)
Publication 2008
Imprint 06 Feb 2008
Number of pages 25
Note accepted for publication in Astroparticle Physics
In: Astropart. Phys. 29 (2008) 257-281
DOI 10.1016/j.astropartphys.2008.02.002
Subject category Astrophysics and Astronomy ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN PS ; HARP PS214
Abstract The results of the measurements of the double-differential production cross-sections of pions in p-C and π±-C interactions using the forward spectrometer of the HARP experiment are presented. The incident particles are 12 GeV/c protons and charged pions directed onto a carbon target with a thickness of 5% of a nuclear interaction length. For p-C interactions the analysis is performed using 100035 reconstructed secondary tracks, while the corresponding numbers of tracks for π-C and π+-C analyses are 106534 and 10122 respectively. Cross-section results are presented in the kinematic range 0.5 GeV/c pπ< 8 GeV/c and 30 mrad θπ< 240 mrad in the laboratory frame. 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.
Copyright/License arXiv nonexclusive-distrib. 1.0



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Email contact: catherine.zimmermann@cern.ch


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