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The total cross sections for the elastic electroproduction of P and J ψ mesons for Q 2 > 8 GeV 2 and 〈W〉 ⋍ 90 GeV/c2 are measured at HERA with the H1 detector. The measurements are for an integrated electron-proton luminosity of ⋍3 pb−1. The dependences of the total virtual photon-proton (γ∗p) cross sections on Q 2 , W and the momentum transfer squared to the proton (t),...
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