“School of Particles”
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| Paper IPM / Particles / 12692 |
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| Abstract: | |
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Considering the nuclear reactions which involve specific features at certain regions of the x-Bjorken variable
whichwas first observed by theEMCgroup, we indicate that the parton distributions in nuclei are not simply as the
parton densities in nucleons. In addition to the most commonly analyzed data sets for deep-inelastic scattering of
charged leptons off nuclei, we also analyze the Drell-Yan dilepton production.We investigate parametrizations of
nuclear parton distributions at the next-to-leading order (NLO) of αs . Finally, optimum nuclear structure functions
are determined by a Ï2 analysis of experimental data for the nuclear structure function FA 2 /F A 2 and Drell-Yan
cross-section ratios. The related uncertainties are estimated by the Hessian method. Our results are in good
agreement with the available experimental data and better than the results of some other fitting parametrization
methods
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