2019/12/19 by Chris A. Flett, Stephen Jones, Flett, C. A. +7
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
paper · pdf · doi:10.48550/arxiv.1912.09128
openalex publication_date 2019/12/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We discuss the exclusive J/ψ photoproduction process, as measured recently at LHCb, as a means of constraining and ultimately determining the low x and low Q gluon PDF. The scale dependence of the theoretical prediction for this process is shown to be systematically improved via a taming of the known MS result, this amounts to resumming logarithmically enhanced small-x terms and implementing a small-Q power correction. The cross section level predictions allow the behaviour of the gluon PDF in the low (x, Q) domain to be determined.