Probing the gluon density of the proton in the exclusive photoproduction of vector mesons at the LHC: a phenomenological analysisV. P. Gonçalves, L. A. S. Martins and W. K. SauterEur. Phys. J. C, 76 2 (2016) 97DOI: https://doi.org/10.1140/epjc/s10052-016-3917-z