Rho meson distribution amplitudes from QCD sum rules with nonlocal condensates

Abstract

The leading-twist distribution amplitude for the longitudinal rho-meson was studied using QCD Sum Rules with nonlocal condensates and a spectral density which includes next-to-leading order radiative corrections. The obtained profile is compared with results from standard QCD sum rules, lattice QCD, holographic QCD, a light-front quark model, and the instanton liquid model. Preliminary estimates for the first two moments of the transverse $\rho$-meson distribute amplitude are also given.

Comments: 6 pages, 2 figures, 2 tables, talk presented by the first author at the Light-Cone Conference 2013, May 20-24, 2013, Skiathos, Greece. v2 minor corrections