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arXiv · hep-ph/9912551

Q^2 dependence of diffractive vector meson electroproduction

A. D. Martin·M. G. Ryskin·T. Teubner
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Abstract

We give a general formula for the cross section for diffractive vector meson electroproduction, gamma^* p -> Vp. We first calculate diffractive qqbar production, and then use parton-hadron duality by projecting out the J^P = 1^- state in the appropriate mass interval. We compare the Q^2 dependence of the cross section for the diffractive production of rho and J/psi mesons with recent HERA data. We include the characteristic Q^2 dependence associated with the use of the skewed gluon distribution. We give predictions for sigma_L/sigma_T for both rho and J/psi production.

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A. D. Martin, M. G. Ryskin, T. Teubner. 1999-12-31. Q^2 dependence of diffractive vector meson electroproduction. https://doi.org/10.1103/physrevd.62.014022

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