Vector meson dominance, photo- and electroproduction from nucleons

General resonance mediation

“…where on the right hand side we have used the "bulk propagator" which is derived from the overlap of the interaction basis with the mass eigenstates [59]. One is therefore able to define a "modified current operator" [26] B|Ĵ…”

Near Threshold electroproduction of the Omega Meson at Momentum Transfer Q²=0.5 (GeV/c)²

“…mixing for which ω = 1 √ 2 (uū + dd) and φ = ss, (in this case tanθ = 1/ √ 2) and squaring each coupling constant, yields the ratio estimate that can be directly compared to the experiment (Schildknecht, 1972),…”

Hadron cascades induced by electron and photon beams in the GeV energy range

“…The hadronic cross sections of photons are well described in the framework of the VMD model as described, for instance, in the review papers of Bauer, Spital, Yennie and Pipkin [6] and Schildknecht [7]. Above 2 GeV we describe the total inelastic photon nucleon cross sections by the simple parametrization [6] a,, = 99.8 + 57.0/G [pb]…”