Measurement of exclusive production of scalar ${\chi }_{c0}$ meson in proton-(anti)proton collisions via ${\chi }_{c0}\to {\pi }^{+}{\pi }^{-}$ decay

Abstract

We consider a measurement of exclusive production of scalar ${\chi }_c(0^{++})$ meson in the proton-proton collisions at LHC and RHIC and in the proton-antiproton collisions at the Tevatron via ${\chi }_{c0}\to {\pi }^{+}{\pi }^{-}$ decay. The corresponding amplitude for exclusive double-diffractive ${\chi }_{c0}$ meson production was obtained within the $k_t$-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 $pp\to pp{\pi }^{+}{\pi }^{-}$ reaction constitutes an irreducible background to the exclusive ${\chi }_{c0}$ meson production. We calculate several differential distributions for $pp(\bar{p})\to pp(\bar{p}){\chi }_{c0}$ process including absorptive corrections. The influence of kinematical cuts on the signal-to-background ratio is investigated. Corresponding experimental consequences are discussed.

16 pages, 10 figures, 2 tables

References in corpus (9)

• Dynamical parton distributions of the nucleon and very small-x physics
• Central Exclusive Particle Production at High Energy Hadron Colliders
• Observation of exclusive charmonium production and gamma+gamma to mu+mu- in p+pbar collisions at sqrt{s} = 1.96 TeV
• On the role of heavy flavor parton distributions at high energy colliders
• Central exclusive production of scalar χ_c meson at the Tevatron, RHIC and LHC energies
• Elastic double diffractive production of axial-vector χ_c(1^{++}) mesons and the Landau-Yang theorem
• Exclusive scalar $f_0(1500)$ meson production for energy ranges available at the GSI Facility for Antiproton and Ion Research (GSI-FAIR) and at the Japan Proton Accelerator Research Complex (J-PARC)
• Central exclusive quarkonium production with tagged forward protons at RHIC
• Low-energy pion-pion scattering in the $pp\to pp{\pi }^{+}{\pi }^{-}$ and $p\bar{p}\to p\bar{p}{\pi }^{+}{\pi }^{-}$ reactions

Cited by in corpus (1)

• $pp\to pp{\eta }^{\prime }$ reaction at high energies