QCDNUM: Fast QCD Evolution and Convolution

Understand

The QCDNUM program numerically solves the evolution equations for parton densities and fragmentation functions in perturbative QCD.

• Un-polarised parton densities can be evolved up to next-to-next-to-leading order in powers of the strong coupling constant, while polarised densities or fragmentation functions can be evolved up to next-to-leading order.
• Other types of evolution can be accessed by feeding alternative sets of evolution kernels into the program.
• A versatile convolution engine provides tools to compute parton luminosities, cross-sections in hadron-hadron scattering, and deep inelastic structure functions in the zero-mass scheme or in generalised mass schemes.