Large-angle production of charged pions with incident pion beams on nuclear targets

Measurements of the double-differential π± production cross section in the range of momentum 100≤p≤800 MeV/c and angle 0.35≤θ≤2.15 rad using π± beams incident on beryllium, aluminum, carbon, copper, tin, tantalum, and lead targets are presented. The data were taken with the large-acceptance hadron p...

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Bibliographic Details
Main Authors: Apollonio, M, Artamonov, A, Bagulya, A, Barr, G, Blondel, A, Bobisut, F, Bogomilov, M, Bonesini, M, Booth, C, Borghi, S, Bunyatov, S, Burguet-Castell, J, Catanesi, MG, Cervera-Villanueva, A, Chimenti, P, Coney, L, Di Capua, E, Dore, U, Dumarchez, J, Edgecock, R, Ellis, M, Ferri, F, Gastaldi, U, Giani, S, Giannini, G
Format: Journal article
Language:English
Published: 2009
Description
Summary:Measurements of the double-differential π± production cross section in the range of momentum 100≤p≤800 MeV/c and angle 0.35≤θ≤2.15 rad using π± beams incident on beryllium, aluminum, carbon, copper, tin, tantalum, and lead targets are presented. The data were taken with the large-acceptance hadron production (HARP) detector in the T9 beam line of the CERN Proton Synchrotron. The secondary pions were produced by beams in a momentum range from 3 to 12.9GeV/c hitting a solid target with a thickness of 5% of a nuclear interaction length. The tracking and identification of the produced particles was performed using a small-radius cylindrical time projection chamber placed inside a solenoidal magnet. Incident particles were identified by an elaborate system of beam detectors. Results are obtained for the double-differential cross sections d2σ/dp dθ at six incident-beam momenta. Data at 3,5,8, and 12GeV/c are available for all targets, while additional data at 8.9 and 12.9GeV/c were taken in positive particle beams on Be and Al targets, respectively. The measurements are compared with several generators of GEANT4 and the MARS Monte Carlo simulation. © 2009 The American Physical Society.