https://doi.org/10.1140/epjc/s10052-007-0517-y
Regulara Article - Experimental Physics
Large-angle production of charged pions by 3-12.9 GeV/c protons on beryllium, aluminium and lead targets
1
Università degli Studi e Sezione INFN, Bari, Italy
2
Rutherford Appleton Laboratory, Chilton, Didcot, UK
3
Institut für Physik, Universität Dortmund, Dortmund, Germany
4
Joint Institute for Nuclear Research, JINR Dubna, Dubna, Russia
5
Università degli Studi e Sezione INFN, Ferrara, Italy
6
CERN, Geneva, Switzerland
7
Section de Physique, Université de Genève, Genève, Switzerland
8
Institut für Physik, Forschungszentrum Karlsruhe, Karlsruhe, Germany
9
Laboratori Nazionali di Legnaro dell’ INFN, Legnaro, Italy
10
Los Alamos National Laboratory, Los Alamos, USA
11
Institut de Physique Nucléaire, UCL, Louvain-la-Neuve, Belgium
12
Università degli Studi e Sezione INFN Milano Bicocca, Piazza Scienza 3, 20126, Milano, Italy
13
Institute for Nuclear Research, Moscow, Russia
14
P.N. Lebedev Institute of Physics (FIAN), Russian Academy of Sciences, Moscow, Russia
15
Università “Federico II” e Sezione INFN, Napoli, Italy
16
Columbia University, New York, USA
17
Nuclear and Astrophysics Laboratory, University of Oxford, Oxford, UK
18
Università degli Studi e Sezione INFN, Padova, Italy
19
LPNHE, Universités de Paris VI et VII, Paris, France
20
Università “La Sapienza” e Sezione INFN Roma I, Roma, Italy
21
Università degli Studi e Sezione INFN Roma III, Roma, Italy
22
Dept. of Physics, University of Sheffield, Sheffield, UK
23
Faculty of Physics, St. Kliment Ohridski University, Sofia, Bulgaria
24
Institute for Nuclear Research and Nuclear Energy, Academy of Sciences, Sofia, Bulgaria
25
Università degli Studi e Sezione INFN, Trieste, Italy
26
Instituto de Física Corpuscular, IFIC, CSIC and Universidad de Valencia, Valencia, Spain
* e-mail: maurizio.bonesini@mib.infn.it
Received:
13
November
2007
Published online:
12
January
2008
Measurements of the double-differential π± production cross-section in the range of momentum 100 MeV/c≤p< 800 MeV/c and angle 0.35 rad ≤θ< 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 GeV/c to 12.9 GeV/c 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 d2σ/dpdθ at six incident proton beam momenta (3 GeV/c, 5 GeV/c, 8 GeV/c, 8.9 GeV/c (Be only), 12 GeV/c and 12.9 GeV/c (Al only)) and compared to previously available data.
© Springer-Verlag , 2008