MAPPING OUT THE QUARK STRUCTURE OF HADRONS IN QCD
A. P. Bakulev, S. V. Mikhailov, N. G. Stefanis
In the context of QCD sum rules with nonlocal condensates
we present a pion distribution amplitude, which is double-humped with
its end-points x
(0, 1) and strongly suppressed, and show that it matches the CLEO experimental
data on the pion-photon transition at the
1s level accuracy, being also in compliance
with the CELLO data. We also include some comments on the nucleon distribution
amplitude and the nucleon evolution equation.
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