Nuclear corrections of parton distribution functions

Abstract

We report global analysis results of experimental data for nuclear structure-function ratios F_2^A/F_2^{A'} and proton-nucleus Drell-Yan cross-section ratios sigma_{DY}^{pA}/sigma_{DY}^{pA'} in order to determine optimum parton distribution functions (PDFs) in nuclei. An important point of this analysis is to show uncertainties of the distributions by the Hessian method. The results indicate that the uncertainties are large for gluon distributions in the whole x region and for antiquark distributions at x>0.2. We provide a code for calculating any nuclear PDFs at given x and Q^2 for general users. They can be used for calculating high-energy nuclear reactions including neutrino-nucleus interactions, which are discussed at this workshop.

1+6 pages, LaTeX, 10 eps files, espcrc2.sty, to be published in Nucl. Phys. B Supplements, Proceedings of the Third International Workshop on Neutrino-Nucleus Interactions in the Few GeV Region (NuInt04), Gran Sasso, Italy, March 17-21, 2004. Nuclear PDF library is available at http://hs.phys.saga-u.ac.jp/nuclp.html

References in corpus (2)

• Nuclear parton distributions at next to leading order
• Determination of polarized parton distribution functions and their uncertainties

Cited by in corpus (5)

• Constraining Gluon Shadowing Using Photoproduction in Ultraperipheral pA and AA Collisions
• Gluon distributions in nuclei probed at the CERN Large Hadron Collider
• Ratios of 15N/12C and 4He/12C inclusive electroproduction cross sections in the nucleon resonance region
• The neural network approach to parton distribution functions
• Hadron production in deuteron-gold collisions and nuclear parton distributions