EPJ Web of Conferences (Jan 2014)

New high precision data on the differential cross sections of the pion-proton elastic scattering

  • Alekseev I. G.,
  • Andreev V. A.,
  • Bordyuzhin I. G.,
  • Filimonov Ye. A.,
  • Golubev V. V.,
  • Gridnev A. B.,
  • Kalinkin D. V.,
  • Koroleva L. I.,
  • Kozlenko N. G.,
  • Kozlov V. S.,
  • Krivshich A. G.,
  • Morozov B. V.,
  • Nesterov V. M.,
  • Novinsky D. V.,
  • Ryltsov V. V.,
  • Sadler M.,
  • Shurygin B. M.,
  • Sulimov A. D.,
  • Sumachev V. V.,
  • Svirida D. N.,
  • Tarakanov V. I.,
  • Trautman V. Yu.

DOI
https://doi.org/10.1051/epjconf/20148102001
Journal volume & issue
Vol. 81
p. 02001

Abstract

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The EPECUR collaboration presents new high precision data on the pion-proton elastic scattering in the second resonance region. The experiment EPECUR is placed on the universal beam channel of the accelerator ITEP. The setup features 0.1% beam pion momentum tagging system, 25 cm long liquid hydrogen target, placed in mylar container and beryllium outer shell, low material wire drift chambers and high performance DAQ. More than 3 billions of triggers have been collected. The data cover pion beam momentum range 0.8 - 1.3 GeV/c and 40-120 degrees center-of-mass scattering angle range for both positive and negative pions. The measured differential cross section has 2% statistical accuracy in 2 degrees angle and 5 MeV/c momentum intervals.