Evaluating the ratio of the exclusive vector meson photoproduction to inclusive hadron/jet production cross section in ultraperipheral heavy ion collisions

Abstract

Using the QCD color dipole picture to study exclusive vector meson and inclusive jet/open meson photoproduction, we calculate the ratio of elastic meson production to inclusive hadron production cross sections for ultraperipheral heavy ion collisions. Predictions are evaluated for run 4 of the Large Hadron Collider in proton-nucleus ($pA$) and nucleus-nucleus ($AA$) collisions. The dependencies of the ratio on jet/hadron transverse momentum and atomic number are investigated. The double ratio $R_{\mathrm{UPC}}$ for $AA$ over $pA$ collisions is also computed, which has been previously proposed as a new observable probing parton saturation physics.

29 pages, 14 figures, and 3 tables

References in corpus (23)

• The Color Glass Condensate
• The Physics of Ultraperipheral Collisions at the LHC
• Quark contribution to the small-$x$ evolution of color dipole
• Triumvirate of Running Couplings in Small-x Evolution
• The Large Hadron-Electron Collider at the HL-LHC
• Impact parameter dependent colour glass condensate dipole model
• Mining for Gluon Saturation at Colliders
• Photonuclear and Two-photon Interactions at High-Energy Nuclear Colliders
• Prompt atmospheric neutrino fluxes: perturbative QCD models and nuclear effects
• Color dipole predictions for the exclusive vector meson photoproduction in $pp/pPb/PbPb$ collisions at Run 2 LHC energies
• Overview of high-density QCD studies with the CMS experiment at the LHC
• Light vector meson photoproduction in hadron-hadron and nucleus-nucleus collisions at the energies available at the CERN Large Hadron Collider
• Quantum chromodynamics at high energy and statistical physics
• Energy dependent nuclear suppression from gluon saturation in exclusive vector meson production
• Selected topics in diffraction with protons and nuclei: past, present, and future
• Finite-size effects on small-$x$ evolution and saturation in proton and nuclear targets
• Charmed Meson Production in Deep Inelastic Scattering
• A phenomenological analysis of the nonperturbative QCD contributions for the photon wave function
• Gluon Saturation Effects in Exclusive Heavy Vector Meson Photoproduction
• Novel Cross Section Ratios as Possible Signals of Saturation in UPCs
• Scaling properties of elastic proton-proton scattering at LHC energies
• Exclusive quarkonium photoproduction: predictions with the Balitsky-Kovchegov equation including the full impact-parameter dependence
• Testing the double-logarithm asymptotic gluon density in ultraperipheral heavy ion collisions at the Large Hadron Collider