Tool for studying the 3D quark and gluon distributions in the nucleon

Gepard is software for analysis of three-dimensional distribution of quarks and gluons in hadrons, encoded in terms of the so-called Generalized Parton Distributions (GPDs).

This web site has manifold purpose:

• Documentation of the software

• Examples of the use of software

• Interface to various representations of results: numerical and graphical

• Interface to datasets used in analyses: numerical and graphical

Contents:

• Software documentation
  • Installation
  • Quickstart
  • Tutorial
  • Data points, sets and files
  • GPDs and form factors
  • Processes and observables
  • Building the theory
  • Fitting theory to data
  • Detailed package info
  • Developer info
  • TODO items
• Data sets
  • CLAS
  • Hall A
  • HERMES
  • H1
  • ZEUS
  • Combined datasets used for fits
• Publications
  • Code runs with the latest version of Gepard package
  • Code runs only with old versions Gepard package
• GPD server
• Credits
  • People
  • Funding