The structure of the proton: The CT14 QCD global analysis S. Dulat, T.-J. Hou, J. Gao, M. Guzzi, J. Huston, P. Nadolsky, J. Pumplin, C. Schmidt, D. Stump and C.-P. Yuan EPJ Web of Conferences, 120 (2016) 07003 Published online: 04 July 2016 DOI: 10.1051/epjconf/201612007003