2014/05/29 by V. Guzey, Guzey, V., M. Zhalov +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1405.7529
10 pages, 4 figures, 1 table
arxiv created 2014/05/29 · openalex publication_date 2014/05/29 · arxiv updated 2014/05/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Using the framework of leading order perturbative QCD along with the CTEQ6L1 gluon distribution of the proton and high-energy HERA data on the γp → J/ψp and γp → ψ(2S) p cross sections along with the corresponding H1 fit, we obtain a good description of the rapidity dependence of the cross sections of photoproduction of J/ψ or ψ(2S) mesons in proton--proton ultraperipheral collisions (UPCs) measured by the LHCb collaboration at the LHC. Within the same framework we also make predictions for the pp → pp J/ψ and pp → pp ψ(2S) UPC cross sections at √sNN=8 and 14 TeV. We show that the possible contribution of the p → Δγ transition to the photon flux discernibly increases the pp → ppV UPC cross section and thus can affect the theoretical interpretation of results.