Nuclear parton distribution functions and their effects on sin^2 theta_W anomaly
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Nuclear parton distribution functions (NPDFs) are investigated by analyzing the data on structure functions F_2^A and Drell-Yan cross sections sigma_{DY}^{pA}. An important point of this analysis is to show uncertainties of the NPDFs by the Hessian method. The analysis indicates that the uncertainties are large for antiquark distributions at x>0.2 and gluon distributions in the whole x region. We also discuss a nuclear effect on the NuTeV sin^2 theta_W anomaly as an application.
4 pages, LaTeX, 5 eps files, dis04.cls, to be published in the proceedings of the 12th International Workshop on Deep Inelastic Scattering (DIS04), Strbske-Pleso, Slovakia, April 14-18, 2004. Nuclear PDF library is available at http://hs.phys.saga-u.ac.jp/nuclp.html
4 pages, LaTeX, 5 eps files, dis04.cls, to be published in the proceedings of the 12th International Workshop on Deep Inelastic Scattering (DIS04), Strbske-Pleso, Slovakia, April 14-18, 2004. Nuclear PDF library is available at http://hs.phys.saga-u.ac.jp/nuclp.html