arxiv ref: 1611.03711Title: Exclusive $J/\psi$ production at the LHC in the $k_T$ factorization approachAuthors: S.P. Jones, A.D. Martin, M.G. Ryskin, T. TeubnerNode: ALU-FRUDURESRs: ESR8Work Packages: WP3: ToolsMilestones: M3.3.3 Improved PDFs using LHC data