Higher twist distribution amplitudes of vector mesons in QCD: Formalism and twist 3 distributions Original Research Article

We present a systematic study of twist 3 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion and takes into account meson and quark mass corrections. A complete set of distribution amplitudes is constructed for ϱ, ω, K∗ and φ mesons, which satisfies all (exact) equations of motion and constraints from conformal expansion. Nonperturbative input parameters are calculated from QCD sum rules, including an update of SU(3) breaking corrections in the leading twist distributions.