EPJ Web of Conferences (Jan 2014)

The PWA of π−π0 system in the presence of a significant irremovable background

  • Mikhasenko M.,
  • Dorofeev V.,
  • Ekimov A.,
  • Gotman V.,
  • Ivashin A.,
  • Kachaev I.,
  • Kalendarev V.,
  • Khokhlov Yu.,
  • Kholodenko M.,
  • Konstantinov V.,
  • Kravchenko S.,
  • Matveev V.,
  • Nikolaenko V.,
  • Plekhanov A.,
  • Ryabchikov D.,
  • Salomatin Yu.,
  • Sugonyaev V.,
  • Zaitsev A.

DOI
https://doi.org/10.1051/epjconf/20148102012
Journal volume & issue
Vol. 81
p. 02012

Abstract

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7 × 106 events of the reaction π−N → π−π0N′ were collected at the VES experiment. Mass independent angular analysis is performed to study production mechanism of ρ-meson. t-channel ω-exchange and π-exchange are isolated. The analysis is done for 8 bins of a four momentum transfer squared to extract cross-section dependence of t′. Novel method of waves extraction is applied to deal with a significant irremovable background.