Higher Twist Distribution Amplitudes of Vector Mesons in QCD: Formalism and Twist Three Distributions

Details Higher Twist Distribution Amplitudes of Vector Mesons in QCD: Formalism and Twist Three Distributions Higher Twist Distribution Amplitudes of Vector Mesons in QCD: Formalism and Twist Three Distributions

1998-02-11

arxiv.org/abs/hep-ph/9802299v2

Nucl.Phys.B529:323-382,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

60 pages, Latex, 3 figures; some misprints corrected and a reference added, To appear in Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(98)00356-3

We present a systematic study of twist three 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 rho, omega, K* and phi 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.

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