Nuclear shadowing and rho photoproduction

Details Nuclear shadowing and rho photoproduction Nuclear shadowing and rho photoproduction

1997-10-03

arxiv.org/abs/hep-ph/9710235v2

Phys.Rev.C57:2648-2654,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, Revtex, 8 postscript figures; extended introduction with added references; change of title

Scientific paper

10.1103/PhysRevC.57.2648

Rho photoproduction on complex nuclei is re-examined using a generalised vector dominance model which succesfully predicts the observed nuclear shadowing in real photoabsorption and deep inelastic scattering. This model is shown to give a good fit to rho photoproduction data on both nucleons and complex nuclei, in which the well-known disagreement between the measured gamma-rho coupling and the gamma-rho coupling required by the simple vector dominance model is eliminated. The rho N total cross-sections required are similar to those predicted by the additive quark model; and the magnitude of the correction to simple vector dominance is consistent with that inferred from the analysis of real photoabsorption and deep inelastic scattering.

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