Photoproduction and electroproduction ofJPC=1−+exotics
نویسندگان
چکیده
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...
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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...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1998
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.57.6771