The CJ (CTEQ-Jefferson Lab) Collaboration studies the quark and gluon structure of the nucleon by performing global QCD fits of parton distribution functions (PDFs). These parametrize a vast array of data including deep-inelastic lepton-nucleon scattering, proton-proton collisions (lepton pair creation, W-boson and jet production), and other reactions, with particular focus on the large-x region.
P.C. Barry1, Chueng-Ryong Ji2, N, Sato1, and W. Melintchouk1
1 Jefferson Lab, Newport News, Virginia 23606, USA 2 Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA Jefferson Lab Angular Moment (JAM) Collaboration