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

Catanesi M. G. , Radicioni E., Edgecock R., Ellis M., Soler F. J. P. , Goessling C., ...More

EUROPEAN PHYSICAL JOURNAL C, vol.54, no.1, pp.37-60, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 54 Issue: 1
  • Publication Date: 2008
  • Doi Number: 10.1140/epjc/s10052-007-0517-y
  • Page Numbers: pp.37-60


Measurements of the double-differential pi(+/-) production cross-section in the range of momentum 100 MeV/c <= p < 800 MeV/c and angle 0.35 rad <= 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 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 d(2)sigma/dpd theta 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.