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  • Jefferson Lab Tri Fold
    Attachment Size
    Jefferson Lab Tri Fold (6.64 MB) 6.64 MB
    Brochures

  • 2016

  • About CJ

    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.

  • Global QCD analysis of pion parton distributions with threshold resummation

    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

  • Downloading files

  • PDF databases

    • CJ (CTEQ-Jefferson Lab) unpolarized PDFs
       
    • JR (Jimenez-Delgado--Reya) unpolarized PDFs
       
    • LHAPDF (Les Huches Accord PDF Interface)
       
    • Durham PDF database
       

    Miscellaneous

  • Octopus -- big picture with detailed legs.

    Novel Scientific Aspects (more details than main page)

    • Simultaneous extractions
    • Monte Carlo
    • Bayesian inference
    • Uncertainty quantification
    • Higher theory
      • Beyond leading power
      • Nuclear effects
    • Machine learning

    Generic analysis flowchart

  • The generalized parton distributions in part describe the spatial distributions of bound partons.

  • JAM is a group that influences all parts of JLAB and scientific research. The projects we work on cover a wide range of physics.