Q^2 dependence of diffractive vector meson electroproduction

Details Q^2 dependence of diffractive vector meson electroproduction Q^2 dependence of diffractive vector meson electroproduction

1999-12-31

arxiv.org/abs/hep-ph/9912551v1

Phys.Rev.D62:014022,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, LaTeX, including five PostScript figures

Scientific paper

10.1103/PhysRevD.62.014022

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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