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PROTONS MOMENTA LIE IN LAB BACKWARD HEMISPHERE.
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We report on double-differential inclusive cross-sections of the production of secondary protons, charged pions, and deuterons, in the interactions with a 5% nuclear interaction length thick stationary carbon target, of proton and pion beams with momentum from \pm 3 GeV/c to \pm 15 GeV/c. Results are given for secondary particles with production angles between 20 and 125 degrees. Cross-sections on carbon nuclei are compared with cross-sections on beryllium, copper, tantalum and lead nuclei.
The measured deuteron to proton ratios for each of the 8 GeV Proton, PI+ and PI- beams for the angular range 20 to 30 degrees.
The measured deuteron to proton ratios for each of the 8 GeV Proton, PI+ and PI- beams for the angular range 30 to 45 degrees.
The measured deuteron to proton ratios for each of the 8 GeV Proton, PI+ and PI- beams for the angular range 45 to 60 degrees.
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EVENTS HAVE ONE OR MORE CUMULATIVE PIONS.
EVENTS HAVE ONE OR MORE CUMULATIVE PROTONS.
EVENTS HAVE ONE OR MORE CUMULATIVE PIONS AND ONE OR MORE CUMULATIVE PROTONS.
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Measurements of the double-differential proton production cross-section in the range of momentum 0.5 GeV/c < p < 8.0 GeV/c and angle 0.05 rad < \theta < 0.25 rad in collisions of charged pions and protons on beryllium, carbon, aluminium, copper, tin, tantalum and lead are presented. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors and impinged on a target of 5 % of a nuclear interaction length. The tracking and identification of the produced particles was performed using the forward spectrometer of the HARP experiment. Results are obtained for the double-differential cross-sections mainly at four incident beam momenta (3 GeV/c, 5 GeV/c, 8 GeV/c and 12 GeV/c). Measurements are compared with predictions of the GEANT4 and MARS Monte Carlo generators.
Differential cross section for proton production with a negative pion beam and Beryllium target in the angular range 0.050 to 0.100 radians. The errors are the square-root of the diagonal elements of the covariant matrix.
Differential cross section for proton production with a negative pion beam and Beryllium target in the angular range 0.100 to 0.150 radians. The errors are the square-root of the diagonal elements of the covariant matrix.
Differential cross section for proton production with a negative pion beam and Beryllium target in the angular range 0.150 to 0.200 radians. The errors are the square-root of the diagonal elements of the covariant matrix.
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THE EVENTS WITH BACKWARD PROTONS.
THE EVENTS WITHOUT BACKWARD PROTONS.
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ONE PION.
ONE PION.
ONE PION.
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DATA FOR PIONS WITH MAXIMUM VALUE OF E*(1-COS(THETA))/W IN EVENT.
DATA FOR PIONS WITH MAXIMUM VALUE OF E*(1-COS(THETA))/W IN EVENT.
E*(1-COS(THETA))/W IS MAXIMUM OF THIS VALUE FOR ALL PIONS IN EVENT. PIONS WITH MAXIMUM VALUE OF E*(1-COS(THETA))/W IN EVENT ARE EXCLUDED FROM DATA.