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Roman Pasechnik

Senior lecturer

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Measurement of exclusive production of scalar Χc0 meson in proton-(anti)proton collisions via πc0→π+π- decay

Author

  • P. Lebiedowicz
  • R. Pasechnik
  • A. Szczurek

Summary, in English

We consider a measurement of exclusive production of scalar Χc(0++) meson in the proton-proton collisions at LHC and RHIC and in the proton-antiproton collisions at the Tevatron via Χc0→π+π- decay. The corresponding amplitude for exclusive double-diffractive Χc0 meson production was obtained within the kt-factorization approach including virtualities of active gluons and the corresponding cross section is calculated with unintegrated gluon distribution functions (UGDFs) known from the literature. The four-body pp→ppπ+π- reaction constitutes an irreducible background to the exclusive Χc0 meson production. We include absorption effects due to proton-proton interaction and pion-pion rescattering. We calculate several differential distributions for pp(p)→pp(p)Χc0 process including the absorptive corrections. The influence of kinematical cuts on the signal-to-background ratio is investigated. Corresponding experimental consequences are discussed.

Department/s

  • Department of Astronomy and Theoretical Physics

Publishing year

2011-07-18

Language

English

Pages

434-444

Publication/Series

Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

Volume

701

Issue

4

Document type

Journal article

Publisher

Elsevier

Keywords

  • Χ(0)→ππ decay
  • Diffractive processes
  • Two-pion continuum

Status

Published

ISBN/ISSN/Other

  • ISSN: 0370-2693