We propose to study quark-hadron duality in meson electroproduction. While duality between inclusive electron-hadron scattering in the resonance and deep inelastic regimes (Bloom-Gilman or quark-baryon duality) is well established, the existence of a similar duality in meson electroproduction has not yet been tested. In the inclusive case, duality implies that single-quark scattering governs th...

Hard diffractive photoand electroproduction of heavy vector mesons (J/ψ and Υ) is evaluated within the leading αs ln Q2 ΛQCD approximation of QCD. In difference On leave of absence from the St.Petersburg Nuclear Physics Institute, Russia. Now at NeuralWare, a subsidiary of Aspen Technology Inc. Also at St.Petersburg Nuclear Physics Institute, Russia. 1 from our earlier work on that subject, als...

A series of measurements of single pion electroproduction on the proton, deuteron, and He was completed recently at Je erson Laboratory by the NucPi Collaboration. The data form the rst part of a study of longitudinal electroproduction in light nuclei. The goal is a determination of the longitudinal cross section in parallel kinematics by means of a Rosenbluth separation, and a search for targe...

On the example of electroproduction 12 Λ B we show effects in cross section caused by various choices momentum initial proton. We have found that are quite noticeable, mainly for small kaon angles. This extention our model calculations beyond frosen-proton approximation represents an important improvement theoretical predictions.