Abstract
A rainbow-ladder truncation of QCD’s Dyson-Schwinger equations, constrained by existing applications to hadron physics, is employed to compute the valence-quark parton distribution functions of the pion and kaon. Comparison is made to - Drell-Yan data for the pion’s -quark distribution and to Drell-Yan data for the ratio : the environmental influence of this quantity is a parameter-free prediction, which agrees well with existing data. Our analysis unifies the computation of distribution functions with that of numerous other properties of pseudoscalar mesons.
- Received 11 February 2011
DOI:https://doi.org/10.1103/PhysRevC.83.062201
©2011 American Physical Society