Speaker
Alberto Accardi
(Hampton U. and Jefferson Lab)
Description
The CJ (CTEQ-Jefferson Lab) collaboration has developed next-to-leading order parton distribution functions (PDFs) determined by global fits to a wide variety of data for hard scattering processes. The analysis includes target mass and higher twist corrections needed for the description of deep inelastic scattering data at large x and low Q^2, nuclear corrections for deuterium targets, and a functional form that accommodates a data-driven d/u ratio at the highest x values. The PDF sets correspond to three different models for the nuclear effects, and provide a more realistic uncertainty range for the d quark PDF compared with previous fits. Applications, for instance to weak boson production at colliders, have been investigated. Comparisons to Drell-Yan data will also be discussed.
Primary author
Alberto Accardi
(Hampton U. and Jefferson Lab)
