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An isotopic effect in phi photoproduction at a few GeV

A. I. Titov·T. -S. H. Lee·H. Toki
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Abstract

A distinct isotopic effect in phi photoproduction at 2-5 GeV region is identified by examining the production amplitudes due to Pomeron-exchange and meson-exchange mechanisms. This effect is mainly caused by the pi-eta interference constrained by SU(3) symmetry and the isotopic structure of the gamma NN coupling in the direct phi-radiation amplitude. It can be tested experimentally by measuring differences in the polarization observables between the gamma-p and gamma-n reactions.

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A. I. Titov, T. -S. H. Lee, H. Toki. 1998-12-27. An isotopic effect in phi photoproduction at a few GeV. https://doi.org/10.1103/physrevc.59.r2993

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