Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-09-13
Eur.Phys.J.C37:205-222,2004; Erratum-ibid.C44:613,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
31 pages Latex, 10 figures and 1 table
Scientific paper
10.1140/epjc/s2004-01986-x
Based on the two-gluon-exchange dynamical mechanism for deeply inelastic scattering at low x ~= Q^2/W^2 <<1, we stress the intimate connection between the total virtual photoabsorption cross section, deeply virtual Compton scattering and vector-meson electroproduction. A simple expression for the cross section for deeply virtual Compton scattering is derived. Parameter-free predictions are obtained for deeply-virtual Compton forward scattering and vector-meson forward production, once the parameters in the total virtual photoabsorption cross section are determined in a fit to the experimental data on deeply inelastic scattering. Our predictions are compared with the experimental data from HERA.
Kuroda Masaaki
Schildknecht Dieter
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