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[Licence| Download | New Version Template] adjs_v1_0.tar.gz(13 Kbytes)
Manuscript Title: QCD evolution equations: numerical algorithms from the Laguerre expansion.
Authors: C. Coriano, C. Savkli
Program title: QCD EVOLUTION EQUATIONS
Catalogue identifier: ADJS_v1_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 118(1999)236
Programming language: Fortran.
Computer: Sun 19.
Operating system: Unix.
Keywords: Structure function, Polarized parton, Distribution, Q**2 evolution, Laguerre expansions, Numerical solution, Particle physics, Elementary, Qcd.
Classification: 11.5.

Nature of problem:
The programs provided here solve the DGLAP evolution equations, with next-to-leading order alphas effects taken to account, for unpolarized, longitudinally polarized and transversely polarized parton distributions.

Solution method:
The method developed by Furmanski and Pertonzio is used. The kernel P(x) of the DGLAP integrodifferential equations and the evolution operators E(t,x) are expanded in Laguerre polynomials.

Running time:
About 5 seconds for the transverse polarization case and 20 minutes for the longitudinal polarization and for the unpolarized.