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The Hard Diffraction in Vector Meson Production at HERA

Barbara Clerbaux
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Abstract

Results on elastic vector meson production at HERA are presented in the framework of perturbative QCD. The energy dependence of the cross section for J/Psi photoproduction and for rho electroproduction is studied. A full polarisation analysis, including the measurement of the 15 elements of the spin density matrix and of R=sigma_L/sigma_T, is presented for rho electroproduction. Finally heavier vector mesons (Psi' and Upsilon) production is discussed.

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Barbara Clerbaux. 1999-05-27. The Hard Diffraction in Vector Meson Production at HERA. https://arxiv.org/abs/hep-ph/9905508

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