Including exclusive heavy vector-meson production data in a global parton analysis

We perform a parton analysis within to determine the gluon parton distribution function (PDF) at next-to-leading order (NLO) at moderate-to-low x using the measurements of exclusive J/ψ production in ep and pp collisions from HERA and LHC. We further study the constraints from the corresponding Υ production process and finish by discussing the possible effects at next-to-next-to-leading order (NNLO) through incorporation of a K factor for the exclusive heavy vector-meson coefficient function at NLO.