Roman Pasechnik
Senior lecturer
Exclusive production of χ c(0 +) meson and its measurement in the π +π - channel
Author
Summary, in English
We report on the results of a theoretical study of the central exclusive production of scalar χ c(0 +) meson via χ c0→π +π - decay in high-energy hadron collisions at the RHIC, Tevatron and LHC. The corresponding amplitude for exclusive double-diffractive χ c0 meson production was obtained within the k t-factorization approach including virtualities of active gluons and the 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 χ c0 meson production. We include the absorption effects due to proton-proton interaction and pion-pion rescattering. Several differential distributions for pp(p̄)→pp(p̄)χc0 process, including the absorptive corrections, were calculated. The influence of kinematical cuts on the signal-to-background ratio is investigated.
Department/s
- Department of Astronomy and Theoretical Physics - Has been reorganised
Publishing year
2011-10
Language
English
Pages
284-287
Publication/Series
Nuclear Physics B - Proceedings Supplements
Volume
219-220
Links
Document type
Journal article
Publisher
Elsevier
Keywords
- χ (0 )→π π decay
- Diffractive processes
- Two-pion continuum
Status
Published
ISBN/ISSN/Other
- ISSN: 0920-5632