The links below give access to FORTRAN codes (grids) containing the latest dynamical parton distribution functions of the nucleon; some "standard" (following the terminology of the papers) sets are available on request. Both the (old) famous GRV parton distributions and these new (G)JR sets are also available as part of the LHAPDF library or at HEPDATA. In addition to the references below, details about the (G)JR parton distributions (e.g. the parameters of the "error" sets) are given in the Ph.D. thesis of P. Jimenez-Delgado (arXiv:0902.3947).

JR09VFNNLO.tar.gz contains the NNLO-MSbar (including uncertainties) dynamical parton distribution functions of the nucleon generated in the VFNS (Variable Flavor Number Scheme) as presented in Phys. Rev. D80 (2009) 114011 (arXiv:0909.1711).

JR09FFNNLO.tar.gz contains the NNLO-MSbar (including uncertainties) dynamical parton distribution functions of the nucleon generated in the FFNS (Fixed Flavor Number Scheme) as presented in Phys. Rev. D79 (2009) 074023 (arXiv:0810.4274). Note that the scale dependence of the running coupling constant is governed by a variable number of active flavors as discussed in Mod. Phys. Lett. A22 (2007) 351 (hep-ph/0608276).

GJR08VFNS.tar.gz contains the LO and NLO-MSbar (including uncertainties) dynamical parton distribution functions of the nucleon generated in the VFNS (Variable Flavor Number Scheme) as presented in Phys. Lett. B664 (2008) 133 (arXiv:0801.3618).

GJR08FFNS.tar.gz contains the LO, NLO-MSbar (including uncertainties and the light- as well as the fixed-order heavy-quark-contributions to F2p) and NLO-DIS dynamical parton distribution functions of the nucleon generated in the FFNS (Fixed Flavor Number Scheme) as presented in Eur. Phys. J. C53 (2008) 355 (arXiv:0709.0614). Note that the scale dependence of the running coupling constant is governed by a variable number of active flavors as discussed in Mod. Phys. Lett. A22 (2007) 351 (hep-ph/0608276).