2011/08/11 by Piotr Lebiedowicz, Roman Pasechnik, Antoni Szczurek
Mathematics · Physics and Astronomy · #Algorithm #Computer science #Factorization #Geometry #Gluon #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Mathematics #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Production (economics) #Proton #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Scalar (mathematics) #Tevatron #hep-ph
paper · pdf · doi:10.1016/j.nuclphysbps.2011.10.112
published as Nucl.Phys.Proc.Suppl. 219-220 (2011) 284-287 · 4 pages, 6 figures, talk by P.Lebiedowicz at the 5th International Hadron Structure'11 Conference, Tatranská Štrba, Slovakia, June 27th - July 1st, 2011
arxiv created 2011/08/11 · openalex publication_date 2011/10/01 · arxiv updated 2015/03/19 · openalex created_date 2022/08/01 · openalex updated_date 2026/08/05
We report on the results of a theoretical study of the central exclusive production of scalar χc(0+) meson via χc0 → π+π- decay in high-energy hadron collisions at the RHIC, Tevatron and LHC. The corresponding amplitude for exclusive double-diffractive χc0 meson production was obtained within the kt-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 p p → p p π+ π- reaction constitutes an irreducible background to the exclusive χc0 meson production. We include the absorption effects due to proton-proton interaction and pion-pion rescattering. Several differential distributions for pp(p) → pp(p)χc0 process, including the absorptive corrections, were calculated. The influence of kinematical cuts on the signal-to-background ratio is investigated.