We present a systematic study of twist-4 light-cone distribution amplitudes of the K∗ and ϕ meson in QCD. The structure of SU(3)-breaking corrections is studied in detail. Non-perturbative input parameters are estimated from QCD sum rules and a renormalon based model. As a by-product, we give a complete reanalysis of the parameters of the twist-4 ρ-meson distribution amplitudes.
@article{arxiv.0707.1201,
title = {Twist-4 Distribution Amplitudes of the K$^*$ and $\phi$ Mesons in QCD},
author = {Patricia Ball and V. M. Braun and A. Lenz},
journal= {arXiv preprint arXiv:0707.1201},
year = {2009}
}