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

Lebiedowicz, P.; Pasechnik, R. LU and Szczurek, A. (2011) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 701(4). p.434-444
Abstract

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... (More)

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. © 201.

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author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
Χ(0)→ππ decay, Diffractive processes, Two-pion continuum
in
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
701
issue
4
pages
11 pages
publisher
Elsevier
external identifiers
  • Scopus:79959876468
ISSN
0370-2693
DOI
10.1016/j.physletb.2011.06.017
language
English
LU publication?
yes
id
fef11fa2-760b-4a7f-9e61-661d7ee62010
date added to LUP
2016-08-18 20:11:19
date last changed
2016-11-07 09:44:07
@misc{fef11fa2-760b-4a7f-9e61-661d7ee62010,
  abstract     = {<p>We consider a measurement of exclusive production of scalar Χc(0<sup>++</sup>) meson in the proton-proton collisions at LHC and RHIC and in the proton-antiproton collisions at the Tevatron via Χ<sub>c0</sub>→π<sup>+</sup>π<sup>-</sup> decay. 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 corresponding 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 absorption effects due to proton-proton interaction and pion-pion rescattering. We calculate several differential distributions for pp(p)→pp(p)Χ<sub>c0</sub> process including the absorptive corrections. The influence of kinematical cuts on the signal-to-background ratio is investigated. Corresponding experimental consequences are discussed. © 201.</p>},
  author       = {Lebiedowicz, P. and Pasechnik, R. and Szczurek, A.},
  issn         = {0370-2693},
  keyword      = {Χ(0)→ππ decay,Diffractive processes,Two-pion continuum},
  language     = {eng},
  month        = {07},
  number       = {4},
  pages        = {434--444},
  publisher    = {ARRAY(0x9772260)},
  series       = {Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {Measurement of exclusive production of scalar Χ<sub>c0</sub> meson in proton-(anti)proton collisions via π<sub>c0</sub>→π<sup>+</sup>π<sup>-</sup> decay},
  url          = {http://dx.doi.org/10.1016/j.physletb.2011.06.017},
  volume       = {701},
  year         = {2011},
}