Pion distribution amplitude -- from theory to data
arXiv:hep-ph/0412248 · doi:10.1063/1.1920987
Abstract
We describe the present status of the pion distribution amplitude as originated from two sources: (i) a nonperturbative approach, based on QCD sum rules with nonlocal condensates, and (ii) a NLO QCD analysis of the CLEO data on F^{γγ^*π}(Q^2), supplemented by the E791 data on diffractive dijet production, and the JLab F(pi) data on the pion electromagnetic form factor.
Invited talk given at the Bogolyubov Conference "Problems of Theoretical and Mathematical Physics", Moscow--Dubna, Russia, 2--6 September, 2004, and at the International Conference "Quark Confinement and Hadron Spectrum VI 2004", Villasimius (Cagliary), Sardinia, Italy, 21--25 September, 2004; 5pp., 3 figures