arXiv:hep-ph/0312141·v1·High Energy Physics — Phenomenology
Mapping out the quark structure of hadrons in QCD
Alexander P. Bakulev🇷🇺 · S. V. Mikhailov🇷🇺 · N. G. Stefanis (BLTPh, JINR)🇷🇺
Abstract
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\to(0,1) strongly suppressed, and show that it matches the CLEO experimental data on the pion-photon transition at the 1\sigma 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.
Comments: Invited contribution to the Festschrift in honor of Prof. Anatoly Efremov's 70th birthday; 8 pages, 4 figures as eps-files (wrapfig.sty needed)