nPDF generator

Using the form below you can calculate, in real time, the nPDF ratios, RiA(x, Q2) = fiA(x, Q2)/fip(x, Q2) for any of the nPDF groups DSSZ, EKS98, EPS08, EPS09, FGS10, HKN04, HKN07, nCTEQ, nDS, nDSg. You can also generate and compare plots of RiA(x, Q2) vs x at any Q2 for up to 4 different parton types, nPDF sets or atomic mass numbers. Mind that some nuclei are not available for HKN.

xmin = xmax = N points = Q2 = GeV2
ymin = ymax =
x-scale: lin log        y-scale: lin log

1  A =
2  A =
3  A =
4  A =
also plot ratios of RiA (2/1, 3/1, 4/1)


EKS98, K. J. Eskola, V. J. Kolhinen and C. A. Salgado, Eur. Phys. J. C9 (1999) 61; K. J. Eskola, V. J. Kolhinen and P. V. Ruuskanen, Nucl. Phys. B535 (1998) 351
EPS08, K. J. Eskola, H. Paukkunen and C. A. Salgado, JHEP 07 (2008) 102
EPS09, K. J. Eskola, H. Paukkunen and C. A. Salgado, JHEP 04 (2009) 065
FGS10, L. Frankfurt, V. Guzey and M. Strikman, Phys. Rept., in preparation, website
HKM, M. Hirai, S. Kumano and M. Miyama, Phys. Rev. D64 (2001) 034003
HKN, M. Hirai, S. Kumano and T. H. Nagai, Phys. Rev. C70 (2004) 044905
nCTEQ, I. Schienbein et al., Phys. Rev. D80 (2009) 094004
nDS, D. de Florian and R. Sassot, Phys. Rev. D69 (2004) 074028
DSSZ, D. de Florian, R. Sassot, M. Stratmann, and P. Zurita, arXiv:1204.3797

Recent reviews:
N. Armesto, J. Phys. G32 (2006) R367

Created by François Arleo and Jean-Philippe Guillet, and adapted from the Parton Distribution Generator. Visit also the Fragmentation Function Generator
Questions and comments to
Updated: September 2010