Exclusive $J/\psi$ production at the LHC in the $k_T$ factorization approach

Abstract

The recent LHCb data for exclusive $J/\psi$ peripheral production at 13 TeV motivate an improved `NLO' analysis to estimate the gluon distribution at low $x$ in which we re-calculate the rapidity gap survival factors and use a more precise expression for the photon flux. We comment on the difference between the $k_T$ and collinear factorization approaches.

arXiv comment9 pages, 2 figures. Version to appear in J.Phys.G (Letters)

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Cited by in corpus (5)

• How to include exclusive $J/\psi$ production data in global PDF analyses
• Very low $x$ gluon density determined by LHCb exclusive $J/\psi$ data
• Exclusive photoproduction of vector mesons in proton-lead ultraperipheral collisions at the LHC
• Photoproduction of vector mesons in proton-proton ultraperipheral collisions at the CERN Large Hadron Collider
• The reggeometric pomeron and exclusive production of $J/\psi$ and $\psi (2S)$ in ultraperipheral collisions at the LHC