Photoproduction of vector mesons in proton–proton ultraperipheral collisions at the CERN Large Hadron Collider

Abstract

Photoproduction of vector mesons are computed in dipole model in proton-proton ultraperipheral collisions(UPCs) at the CERN Larger Hadron Collider (LHC). The dipole model framework is employed in the calculations of cross sections of diffractive processes. Parameters of the bCGC model are refitted with the latest experimental data. The bCGC model and Boosted Gaussian wave functions are employed in the calculations. We obtain predictions of rapidity distributions of J/ψ and ψ(2s) mesons in proton-proton ultraperipheral collisions. The predictions give a good descriptions to the experimental data of LHCb. Predictions of φ and ω mesons are also calculated in this paper.

Coherent Photoproduction of Low- p T Charmonium in Peripheral Heavy Ion Collisions within the Color Dipole Model

“…Advances in High Energy Physics is parameterized in the boosted Gaussian expressions, have the following general form [38][39][40][41][42].…”

Coherent photoproduction of low-$p_{T}$ charmonium in peripheral heavy ion collisions within the color dipole model

“…f , m f is the quark mass, and M v is the mass of vector meson. The scalar functions φ T,L (r d , z) of vector meson, that is parameterized in the boosted Gaussian expressions, have the following general form [30,31,32,33,34]…”

Exclusive photoproduction of vector meson at next-to-leading order from Color Glass Condensate

“…A key ingredient to calculate the differential cross section is the dipole-proton scattering amplitude. It is known that almost all the past studies on the differential cross section of vector meson production in the framework of CGC were hovered on the LO level in the literature [53,54]. Although the LO dipole amplitude can describe the diffractive vector meson production experimental data at HERA under certain uncertainties [33,55], the precision of the model has to be improved to distinguish the dynamic mechanism of the CGC evolution from the DGLAP evolution, since the DGLAP formulism can also give a good description of the data [34].…”