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A phenomenological study of helicity amplitudes of high energy exclusive leptoproduction of the rho meson

By I. V. Anikin, A. Besse, D. Yu. Ivanov, B. Pire, L. Szymanowski and S. Wallon

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.Comment: 20 pages, 11 figures, published version in PR

Topics: High Energy Physics - Phenomenology, High Energy Physics - Experiment
Year: 2011
DOI identifier: 10.1103/PhysRevD.84.054004
OAI identifier: oai:arXiv.org:1105.1761
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