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Exclusive production of χ c(0 +) meson and its measurement in the π +π - channel

Lebiedowicz, P.; Pasechnik, R. LU and Szczurek, A. (2011) In Nuclear Physics, Section B, Proceedings Supplements 219-220. p.284-287
Abstract

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... (More)

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. © 2011 Elsevier B.V.

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author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
χ (0 )→π π decay, Diffractive processes, Two-pion continuum
in
Nuclear Physics, Section B, Proceedings Supplements
volume
219-220
pages
4 pages
publisher
Elsevier
external identifiers
  • Scopus:84855741328
ISSN
0920-5632
DOI
10.1016/j.nuclphysbps.2011.10.112
language
English
LU publication?
yes
id
c4300ac9-dca4-4e0e-847f-26c17f63c260
date added to LUP
2016-08-18 20:15:38
date last changed
2016-11-07 09:44:07
@misc{c4300ac9-dca4-4e0e-847f-26c17f63c260,
  abstract     = {<p>We report on the results of a theoretical study of the central exclusive production of scalar χ <sub>c</sub>(0 <sup>+</sup>) meson via χ <sub>c0</sub>→π <sup>+</sup>π <sup>-</sup> decay in high-energy hadron collisions at the RHIC, Tevatron and LHC. The corresponding amplitude for exclusive double-diffractive χ <sub>c0</sub> meson production was obtained within the k <sub>t</sub>-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 <sup>+</sup>π <sup>-</sup> reaction constitutes an irreducible background to the exclusive χ <sub>c0</sub> 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. © 2011 Elsevier B.V.</p>},
  author       = {Lebiedowicz, P. and Pasechnik, R. and Szczurek, A.},
  issn         = {0920-5632},
  keyword      = {χ (0 )→π π decay,Diffractive processes,Two-pion continuum},
  language     = {eng},
  pages        = {284--287},
  publisher    = {ARRAY(0x9d35740)},
  series       = {Nuclear Physics, Section B, Proceedings Supplements},
  title        = {Exclusive production of χ <sub>c</sub>(0 <sup>+</sup>) meson and its measurement in the π <sup>+</sup>π <sup>-</sup> channel},
  url          = {http://dx.doi.org/10.1016/j.nuclphysbps.2011.10.112},
  volume       = {219-220},
  year         = {2011},
}