H1prelim-01-071

Diffractive J/Psi vector Meson Production at High t at HERA

Reference N.N., to be presented at DIS 2001, April 2001
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Contact Duncan Brown, Andreas Meyer
Abstract A measurement of the diffractive production of J/Psi vector mesons with four-momentum transfer squared |t| at the proton vertex up to 20 GeV is presented in photoproduction at HERA. The J/Psi is identified via its decay into two unlikesign leptons. The differential cross section d sigma / d |t| is extracted and compared to theoretical predictions.
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