Large-angle production of charged pions by 3-12.9 GeV/c protons on beryllium, aluminium and lead targets

Abstract
Measurements of the double-differential π± production cross-section in the range of momentum $100 \MeVc \leq p < 800 \MeVc$ and angle $0.35 \rad \leq \theta < 2.15 \rad$ in proton--beryllium, proton--aluminium and proton--lead collisions are presented. The data were taken with the HARP detector in the T9 beam line of the CERN PS. The pions were produced by proton beams in a momentum range from 3 \GeVc to 12.9 \GeVc hitting a 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 (TPC) 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 at six incident proton beam momenta (3 \GeVc, 5 \GeVc, 8 \GeVc, 8.9 \GeVc (Be only), 12 \GeVc and 12.9 \GeVc (Al only)) and compared to previously available data.
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Bibliographic reference
HARP Collaboration Catanesi, Maria Gabriella Burguet Castell, Jordi Cervera Villanueva, Anselmo Gómez Cadenas, Juan José Martín-Albo Simón, Justo Novella Garijo, Pau Sorel, Michel 2008 Large-angle production of charged pions by 3-12.9 GeV/c protons on beryllium, aluminium and lead targets European Physical Journal C 54 1 37 60
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