Image credit: Joachim Meyer; DESY / HERA

Global QCD Analyses

An on-going comprehensive global QCD analysis project to test the accuracy of QCD and to extract the universal parton distribution functions needed in calculations of all high energy physics processes

CTEQ studies of parton distribution functions

  • CTEQ-TEA (CTEQ Tung Et Al.) general-purpose parton distributions in the nucleon up to the next-to-next-to-leading order (NNLO); tools for the fast PDF analysis, PDF updating and combination of PDF sets; specialized PDFs for computations with massive quarks
  • CTEQ-Jefferson Lab (CJ) PDFs: next-to-leading order (NLO) PDFs with large-x data sets
  • nCTEQ: Nuclear parton distribution functions
  • Older CTEQ PDFs are availble at the legacy CTEQ webpage hosted by Randy Scalise.
  • ManeParse is a modular Mathematica package that provides access to PDFs for hadronic calculations. It allows for parsing of .pds and LHAPDF6 files and estimates PDF errors for Hessian and MC releases.

Other parton distribution and fragmentation functions