A phenomenological study of helicity amplitudes of high energy exclusive leptoproduction of the rho meson
arXiv:1105.1761 · doi:10.1103/PhysRevD.84.054004
Abstract
We apply a previously developed scheme to consistently include the twist-3 distribution amplitudes for transversely polarized rho meson in order to evaluate, in the framework of kT factorization, the helicity amplitudes for exclusive leptoproduction of a light vector meson, at leading order in alphaS. We compare our results with high energy experimental data for the ratios of helicity amplitudes T11/T00 and T01/T00 and get a good description of the data.
20 pages, 11 figures, published version in PRD