Abstract

The forward impact factor for the virtual photon to light vector meson transition is evaluated in the next-to-leading approximation. It is shown that in the hard kinematic domain, both in the leading and in the next-to-leading approximation, the impact factor factorizes, up to power suppressed corrections, into the convolution of a perturbatively calculable hard-scattering amplitude and a meson twist-2 distribution amplitude.

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