https://doi.org/10.1140/epjc/s10052-007-0475-4
Regular Article - Experimental Physics
Large-angle production of charged pions by 3 GeV/c–12 GeV/c protons on carbon, copper and tin 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, Russia
5
Università degli Studi e Sezione INFN, Ferrara, Italy
6
CERN, Geneva, Switzerland
7
Section de Physique, Université de Genève, Geneve, Switzerland
8
Institut für Physik, Forschungszentrum Karlsruhe, Karlsruhe, Germany
9
University of Kyoto, Kyoto, Japan
10
Laboratori Nazionali di Legnaro dell’ INFN, Legnaro, Italy
11
Los Alamos National Laboratory, Los Alamos, USA
12
Institut de Physique Nucléaire, UCL, Louvain-la-Neuve, Belgium
13
Institute for Nuclear Research, Moscow, Russia
14
Università degli Studi e Sezione INFN Milano Bicocca, Milano, Italy
15
P. N. Lebedev Institute of Physics (FIAN), Russian Academy of Sciences, Moscow, Russia
16
Università “Federico II” e Sezione INFN, Napoli, Italy
17
Columbia University, New York, USA
18
Nuclear and Astrophysics Laboratory, University of Oxford, Oxford, UK
19
Università degli Studi e Sezione INFN, Padova, Italy
20
LPNHE, Universités de Paris VI et VII, Paris, France
21
Università “La Sapienza” e Sezione INFN Roma I, Roma, Italy
22
Università degli Studi e Sezione INFN Roma III, Roma, Italy
23
Dept. of Physics, University of Sheffield, Sheffield, UK
24
Faculty of Physics, St. Kliment Ohridski University, Sofia, Bulgaria
25
Institute for Nuclear Research and Nuclear Energy , Academy of Sciences, Sofia, Bulgaria
26
Università degli Studi e Sezione INFN, Trieste, Italy
27
Instituto de Física Corpuscular, IFIC, CSIC and Universidad de Valencia, Valencia, Spain
28
Now at FNAL, Batavia, Illinois, USA
29
Now at Codian Ltd., Langley, Slough, UK
30
Now at University of Glasgow, Glasgow, UK
31
Now at Imperial College, University of London, London, UK
32
Permanently at Instituto de Física de Cantabria, Univ. de Cantabria, Santander, Spain
33
ITEP, Moscow, Russian Federation
34
Now at TRIUMF, Vancouver, Canada
35
Now at University of St. Gallen, St. Gallen, Switzerland
36
On leave of absence from Ecoanalitica, Moscow State University, Moscow, Russia
37
Now at Çukurova University, Adana, Turkey
38
Now at III Phys. Inst. B, RWTH, Aachen, Germany
39
On leave of absence from INFN, Sezione di Ferrara, Italy
40
Now at SpinX Technologies, Geneva, Switzerland
41
Now at CERN, Geneva, Switzerland
42
Now at University of Rome Tor Vergata, Rome, Italy
43
Now at LBL, Berkeley, California, USA
44
Now at Section de Physique, Université de Genève, Genève, Switzerland
45
Now at Royal Holloway, University of London, London, UK
46
Now at University of Sussex, Brighton, UK
47
Now at ESA/ESTEC, Noordwijk, The Netherlands
* e-mail: gomez@mail.cern.ch
Received:
15
June
2007
Revised:
3
September
2007
Published online:
30
November
2007
A measurement of the double-differential π± production cross-section in proton–carbon, proton–copper and proton–tin collisions in the range of pion momentum 100 MeV/c≤p<800 MeV/c and angle 0.35 rad≤θ<2.15 rad is 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 GeV/c hitting a target with a thickness of 5% of a nuclear interaction length. The tracking and identification of the produced particles was done using a small-radius cylindrical time projection chamber (TPC) placed in a solenoidal magnet. An elaborate system of detectors in the beam line ensured the identification of the incident particles. Results are shown for the double-differential cross-sections d2σ/dpdθ at four incident proton beam momenta (3 GeV/c, 5 GeV/c, 8 GeV/c and 12 GeV/c).
© Springer-Verlag , 2008
