Twist-3 distribution amplitudes of K* and φ mesons

Abstract

We present a systematic study of twist-3 light-cone distribution amplitudes of K* and φ mesons in QCD. The structure of SU(3)-breaking corrections is studied in detail. Non-perturbative input parameters are estimated from QCD sum rules. As a by-product, we update the parameters describing the twist-3 distribution amplitudes of the ρ meson. We also review and update predictions for the twist-2 distribution amplitudes of ρ, K* and φ. © SISSA 2007.