منابع مشابه
Diffractive Electroproduction *
In the following, the term ‘diffractive electroproduction’ or ‘diffractive deep inelastic scattering (DIS)’ is used to characterize those processes in small-x DIS where, in spite of the high virtuality of the exchanged photon, the proton target remains intact or almost intact. Thus, the term is used synonymously with the expression ‘rapidity gap events in DIS’. Historically, the term diffractio...
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The unitary isobar model MAID has been extended and used for a partial wave analysis of pion photoand electroproduction in the resonance region W < 2 GeV. Older data from the world data base and more recent experimental results from Mainz, Bates, Bonn and JLab for Q up to 4.0 (GeV/c) have been analyzed and the Q dependence of the helicity amplitudes have been extracted for a series of four star...
متن کاملElectroproduction of Vector Mesons
Exclusive electroproduction of vector mesons (VMs) is a particularly good process for studying the transition from the soft to the hard regime of strong interactions [1], the former being well described within the Regge phenomenology while the latter by perturbative QCD (pQCD). The interest in this interplay comes from the need to understand at which scale a partonic language is applicable. The...
متن کامل0 Two pion electroproduction ∗
We have extended a model for the γN → ππN reaction to virtual photons and selected the diagrams which have a ∆ in the final state. The agreement found with the γ v p → ∆ 0 π + and γ v p → ∆ ++ π − reactions is good. The sensitivity of the results to N ∆ transition form factors is also studied. The present reaction, selecting a particular final state, is an extra test for models of the γ v N → π...
متن کاملDuality in Meson Electroproduction
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...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2013
ISSN: 1742-6596
DOI: 10.1088/1742-6596/455/1/012042