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Elastic Photoproduction of Jpsi Mesons |
| Reference |
Preliminary results expected for DIS03, Spring 2003 |
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| Contact |
P Fleischmann |
| Abstract |
The elastic J/psi photoproduction cross section is measured using events of the type ep -> e Jpsi p -> e mu+ mu- p in the kinematic region Q^2 < 1 GeV^2, 40 < W < 150 GeV and |t| < 1.2 GeV^2, Q^2, W and t being the photon virtuality, photon-proton centre of mass energy and squared four-momentum transfer respectively. The analysis is based on an integrated luminosity of 40 pb^-1. Single and double differential cross sections are measured as a function of W and t and are compared with perturbative QCD calculations. |
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