Large-angle production of charged pions by 3 GeV/c-12 GeV/c protons on carbon, copper and tin targets


Catanesi M. G. , Radicioni E., Edgecock R., Ellis M., Robbins S., Soler F. J. P. , ...More

EUROPEAN PHYSICAL JOURNAL C, vol.53, no.2, pp.177-204, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 2
  • Publication Date: 2008
  • Doi Number: 10.1140/epjc/s10052-007-0475-4
  • Title of Journal : EUROPEAN PHYSICAL JOURNAL C
  • Page Numbers: pp.177-204

Abstract

A measurement of the double-differential pi(+/-) 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 <= theta < 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 d(2) sigma/dp d theta at four incident proton beam momenta (3 GeV/c, 5 GeV/c, 8 GeV/c and 12 GeV/c).