2003/12/10 by Alexander P. Bakulev, S. V. Mikhailov, N. G. Stefanis
Physics and Astronomy · #hep-ph
published as Phys.Part.Nucl. 35 (2004) 7-16; Phys.Part.Nucl. 35 (2004) S2-S7 · Invited contribution to the Festschrift in honor of Prof. Anatoly Efremov's 70th birthday; 8 pages, 4 figures as eps-files (wrapfig.sty needed)
arxiv created 2003/12/10 · arxiv updated 2009/12/01
In the context of QCD sum rules with non-local condensates we present a pion distribution amplitude, which is double-humped with its end-points x→(0,1) strongly suppressed, and show that it matches the CLEO experimental data on the pion-photon transition at the 1σlevel accuracy, being also in compliance with the CELLO data. We also include some comments on the nucleon distribution amplitude and the nucleon evolution equation.