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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.

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author
; and
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
2024-01-04 11:05:12
@article{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.</p>}},
  author       = {{Lebiedowicz, P. and Pasechnik, R. and Szczurek, A.}},
  issn         = {{0370-2693}},
  keywords     = {{Χ(0)→ππ decay; Diffractive processes; Two-pion continuum}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{4}},
  pages        = {{434--444}},
  publisher    = {{Elsevier}},
  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}},
  doi          = {{10.1016/j.physletb.2011.06.017}},
  volume       = {{701}},
  year         = {{2011}},
}