QCD dynamics in mesons at soft and hard scales

Details QCD dynamics in mesons at soft and hard scales QCD dynamics in mesons at soft and hard scales

2010-05-18

arxiv.org/abs/1005.3321v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, 1 double panel figure, invited talk presented at the Workshop on Achievements and New Directions in Subatomic Physics

Scientific paper

Using a ladder-rainbow kernel previously established for the soft scale of light quark hadrons, we explore, within a Dyson-Schwinger approach, phenomena that mix soft and hard scales of QCD. The difference between vector and axial vector current correlators is examined to estimate the four quark chiral condensate and the leading distance scale for the onset of non-perturbative phenomena in QCD. The valence quark distributions, in the pion and kaon, defined in deep inelastic scattering, and measured in the Drell Yan process, are investigated with the same ladder-rainbow truncation of the Dyson-Schwinger and Bethe-Salpeter equations.

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