The Coordinated Theoretical-Experimental Project on QCD

CTEQ is a multi-institutional collaboration devoted to a broad program of research projects and cooperative enterprises in high-energy physics centered on Quantum Chromodynamics (QCD) and its implications in all areas of the Standard Model and beyond.

The Collaboration consists of 39 theorists and experimentalists at 22 universities (Baylor, Florida State, Hampton, Illinois, Illinois Institute of Technology, Iowa State, Karlsruhe, Michigan State, Muenster, Northwestern, Oregon, Penn State, Pittsburgh, Rochester, Southern Methodist, SUNY Buffalo, SUNY Stony Brook, Taipei, Tubingen, U.C. Riverside, Washington, Witwatersrand) and 5 national laboratories (Argonne, CERN, Fermilab, Jefferson, SLAC).

The Project's program includes:

• A wide range of research projects to advance the quantitative predictions of Quantum Chromodynamics, emphasizing collaboration between theorists and experimentalists;
• An annual CTEQ Summer School on QCD Analysis and Phenomenology to promote the understanding of QCD and its proper use among young physicists, especially experimentalists;
• 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;
• A Handbook of Perturbative QCD which will provide an up-to-date reference for the entire field; and
• Periodic topical Workshops to address current outstanding problems in QCD research for active working high-energy physicists.

The CTEQ research projects and the CTEQ Summer Workshop & Conference are supported by the National Science Foundation and the Department of Energy through grants to the universities and laboratories of CTEQ members.

Wu-Ki Tung Award for Early-Career Research on QCD

Members of the CTEQ Collaboration, present and past

CTEQ Topical Workshops and Symposia

• "Parton distributions as a bridge from low to high energies" 8-10 November 2018, JLab, Newport News, VA
• Joint CTEQ Meeting and POETIC 7 - 14-18 Nov. 2016
• Proton Structure in the LHC Era - School and Workshop - from 29 September 2014 to 02 October 2014 (Europe/Berlin) DESY Hamburg
• Workshop on QCD Tools for LHC Physics: From 8 to 14 TeV "What's needed and why?" - 14-15 November, 2013 Fermilab, Batavia, Illinois, USA
• CTEQ Collaboration Meeting: November 15-17, 2012, Thomas Jefferson National Accelerator Facility, Newport News, VA
• Confronting Theory with Experiment: Puzzles, Challenges and Opportunities in the LHC Era at Fermilab 17-18 November 2011
• Standard Model Benchmarks at the Tevatron and LHC, 19-20 November 2010, Fermilab
• Higgs Physics at the Tevatron and LHC: the QCD Issues, 19 November 2009, Fermilab
• Physics at the LHC: Early Challenges, 14-15 May 2007, Kellogg Biological Station, Michigan State University
• ANL meeting/workshop, May 2006
• Jefferson Lab CTEQ Meeting Physics Session, November 2005
• Joint CTEQ/CDF/D0 Workshop on W/Z Physics Fermilab, 22 April 2005
• Fermilab CTEQ Meeting Physics Session, October 2004
• MSU CTEQ Meeting Physics Session, October 2003
• Co-sponsor of 1999 "QCD and Weak Boson Physics workshop in preparation for Run II at the Fermilab Tevatron"
• The Pheno-CTEQ Symposium 1998 - Frontiers of Phenomenology: From Non-Perturbative QCD to New Physics : 23 - 26 March 1998; Madison
• Fall 1996 Confronting QCD with Experiment: Puzzles and Challenges : 7 - 9 November; Fermilab
  • Presentation transparencies online
• Spring 1996 Top Quark Production and Mass Determination: 4 - 5 April; Fermilab
• 1995 Collider Physics: 27 - 28 October; Michigan State University
• 1994 Up and Down Quarks, Drell-Yan, and W Production: 13 May; Fermilab
• 1993 QCD2TEV: 29 - 30 October; Michigan State University

Summer Schools on QCD Analysis and Phenomenology

• 2018 CTEQ Summer School: 18 - 28 June 2018; Mayaguez, Puerto Rico, USA
• 2017 CTEQ Summer School: 18 - 28 July; Pittsburgh, PA, USA
• 2016 DESY-MCnet-CTEQ Summer School: 6 - 16 July; Hamburg, Germany
• 2015 CTEQ Summer School: 7 - 17 July; Pittsburgh, PA, USA
• 2014 CTEQ Summer School: 8 - 18 July; Peking University, Beijing
• 2013 CTEQ Summer School: 7 - 17 July; University of Pittsburgh, PA, USA
• 2012 CTEQ Summer School: 30 July - 9 August; Lima, Peru
  
• 2011 CTEQ Summer School: 10 - 20 July; Madison, Wisconsin, USA
  
• 2010 CTEQ-MCnet Summer School: 26 July - 4 August; Lauterbad (Black Forest), Germany (local copy)
  
• 2009 CTEQ Summer School: 24 June - 2 July; Madison, Wisconsin, USA
  
• 2008 CTEQ-MCnet Summer School: 8 - 16 August; Debrecen, Hungary
  
• 2007 CTEQ Summer School: 30 May - 7 June; Madison, Wisconsin, USA
  
• 2006 CTEQ Summer School: 1 - 9 July; Rhodes, Greece
  
• 2005 CTEQ Summer School: 19 - 27 May; Puebla, Mexico
  
• 2004 CTEQ Summer School: 22 - 30 June; University of Wisconsin at Madison, USA
  
• 2003 CTEQ Summer School: 22 - 30 May; Sant Feliu de Guixols, Catalonia, Spain
  
• 2002 CTEQ Summer School: 2 - 10 June; University of Wisconsin at Madison, USA
  
• 2001 CTEQ Summer School: 17 - 26 June; St. Andrews, Scotland
  
• 2000 CTEQ Summer School: 30 May - 7 June; Lake Geneva, Wisconsin, USA
• 1998 CTEQ Summer School: 8-16 July 1998; Courmayeur, Aosta Valley, Italy
• 1997 CTEQ Summer School: 27 May - 4 June; Lake Como, Wisconsin, USA
• 1995 CTEQ-DESY Summer School: 17 July - 25 July; Bad Lauterberg, Germany
• 1994 CTEQ Summer School: 10 August - 18 August; Lake Ozark, Missouri, USA
• 1993 CTEQ Summer School: 25 July - 3 August; Lake Monroe, Indiana, USA
• 1992 CTEQ Summer School: 27 May - 3 June; Mackinac Island, Michigan, USA

Parton Distribution Functions

CTEQ PDFs

• CT14 Parton Distribution Functions
• ManeParse version 1.0
  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.
• CJ12 (CTEQ-Jefferson Lab) next-to-leading order (NLO) PDFs
• CT10 Parton Distribution Functions
• nCTEQ - Nuclear Parton Distribution Functions
• CTEQ6 Fortran source
  See also the preprint hep-ph/0201195

• CTEQ5 Fortran source - {x,Q} Table Form
• CTEQ Gluon Distribution Uncertainty Study courtesy of Steve Kuhlmann
• CTEQ4 Fortran source - {x,Q} Table Form
• PDFLIB-like Fortran routine courtesy of Steve Kuhlmann
• Fortran source - Parametrized PDFs
  Two sets of the most commonly used CTEQ5 distributions are now also given in parametrized function form, which do not need any external data files. They are CTEQ5M1 and CTEQ5L.

  For details, see comment lines in the respective fortran files.

  • CTEQ5M1 and CTEQ5L (25547 bytes)
  • CTEQ4 (45481 bytes)
  • CTEQ3 (21573 bytes)
  • CTEQ2 (38021 bytes)
  • CTEQ1 (29853 bytes)
• Fortran source - QCD Evolution
  • CTEQ3m Evolution package in tarred, gzipped, uuencoded form (60473 bytes)
  • Evolution files (choose from a collection of initialization files)
• Mathematica notebooks
  • demoCTEQ5.nb, loadCTEQ5.m.
  • CTEQ4 package in tarred, gzipped, uuencoded form (30174 bytes)
  • CTEQ3 package in tarred, gzipped, uuencoded form (15182 bytes)
  • CTEQ1 package in tarred, gzipped, uuencoded form (15531 bytes)
  • Morfín-Tung package in tarred, gzipped, uuencoded form (13162 bytes)

Other PDFs and FFs

• Neural Network Parametrization of Deep-Inelastic Structure Functions by Stefano Forte, Lluís Garrido, José Ignacio LaTorre, and Andrea Piccione
• The HEPDATA Collection of MRS and GRV PDFs at Durham University, UK
• The MRS(R) PDFs released June 1996 and older MRS distributions, available by anonymous ftp at cpt1.dur.ac.uk:/pub/mrs/
• Glenn Ladinsky's Collection of Polarized PDFs (see the preprint at http://xxx.lanl.gov/abs/hep-ph/9601287)
  • POLGAL Package in tarred, gzipped, uuencoded form (587991 bytes)
  • POLGAL files (choose from a collection of data files)
• The ACTW (Alvero, Collins, Terron, and Whitmore) parton densities in the pomeron have been included in the POMPYT-C event generator for diffractive hard scattering.
• Deeply Vitual Compton Scattering evolution codes, LO and NLO programs by Andreas Freund and Martin McDermott.
  • Older code: pdfcpac3.f is an evolution program for nondigonal parton distributions written by Andreas Freund (see the preprint at http://xxx.lanl.gov/abs/hep-ph/9801388)
• CERN PDFLIB Writeup
• Some photon PDFs courtesy of M. Doncheski, original source uncertain
• The Fragmentaion Functions Database by Marco Radici

Miscellaneous

• Q_T Resummation Portal at MSU - A collection of resources for transverse momentum resummation
• Resummed Transverse Momentum Distributions by Pavel Nadolsky (SMU) and C.-P. Yuan (MSU)
• ResBos Monte Carlo package for RESummed BOSon Production and Decay developed by Csaba Balazs and C.-P. Yuan (MSU) (see the preprint CTEQ-704 at http://xxx.lanl.gov/abs/hep-ph/9704258)
• Kinematic {x,Q} map of the experiments used in the CTEQ5 fit
  • color Encapsulated PostScript, 269807 bytes
  • color gif image, 24021 bytes
• Kinematic {x,Q} map of the experiments used in the CTEQ4 fit courtesy of Harry Weerts
  • color Encapsulated PostScript, 255248 bytes
  • color gif image, 21384 bytes
• Mathematica notebooks of FeynArts and FeynCalc sample calculations courtesy of Fred Olness
  • using FeynCalc 4.1.0 and Mathematica 4.x
  • Old files for Mathematica version 2.x
• Acronym dictionary
• CERNLIB
• POMPYT-C is an event generator for diffractive hard scattering that can use parton densities in the pomeron generated by DGLAP evolution from user-defined inital conditions. It is a combination of the POMPYT event generator and the CTEQ evolution package. POMPYT-C was developed by John Collins and Lyndon Alvero.

Handbook of Perturbative QCD

• Version 1.1
  (11/11/01, Incorporates version 1.0 errata and improved fonts.) Technical production by Randall J. Scalise and Clifford W. Yapp (SMU)
  • Version 1.1 gzipped PostScript (194 pages, 725923 bytes) Best for printing.
    
  • Version 1.1 PDF (Portable Document Format, not Parton Distribution Function!, 194 pages, 1528382 bytes).
    Best for on-screen viewing. Searchable, with thumbnails, scalable fonts, and hyperlinks.
    Download the free Adobe Acrobat Reader if you do not already have it.
• Version 1.0 (2/28/00, almost the published version except for minor edits.)
• The Handbook of Perturbative QCD was published in Reviews of Modern Physics, Volume 67, Number 1, January 1995, (pp. 157-248).
  • Reviews of Modern Physics Reprint order form (PostScript, 32675 bytes) The listed price for one copy of the Handbook is $10.50 US.

CTEQ Preprints

Other CTEQ Pages

• The CTEQ List of Challenges in Perturbative QCD at Florida State University by Jeff Owens
• The CTEQ Pedagogical Page at Southern Methodist University by Fred Olness
• A Potpourri of Partons Page at the University of Oregon by Dave Soper

High-Energy Physics Links

The URL of this page is http://cteq.org

Send comments and corrections to: Randall J. Scalise <scalise@smu.edu>
Last modified: Wed Feb 17 14:21:42 CST 2016