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arXiv · hep-ph/9611207

Wavefunction corrections and off-forward gluon distributions in diffractive J/psi electroproduction

Pervez Hoodbhoy
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Abstract

Diffractive production of J/Psi particles by virtual photons on a proton target is studied with a view towards understanding two important corrections to the leading order result. First, the effect of Fermi motion of the heavy quarks is studied by performing a systematic expansion in the relative velocity, and a simple correction factor is derived. This is considerably less than estimated previously. Second, since the kinematics necessarily requires that non-zero momentum be transferred to the proton, off-forward gluon distributions are probed by the scattering process. To estimate the importance of the off-forwardness, we compute, in leading order perturbation theory, the extent of deviation from the usual forward gluon distribution in a quark.

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Pervez Hoodbhoy. 1996-11-01. Wavefunction corrections and off-forward gluon distributions in diffractive J/psi electroproduction. https://doi.org/10.1103/physrevd.56.388

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