Abstract
The reaction mechanism for the correlated {pi}{sup 0}{gamma} emission in the photon-induced reaction on a proton target is studied. Since this reaction is studied in the GeV region, one can assume that it proceeds through the formation of the vector meson in the intermediate state. The vector meson, being an unstable particle, decays into {pi}{sup 0}{gamma} bosons after propagating a certain distance. The analysis shows that the {pi}{sup 0}{gamma} event seen in coincidence in the final state dominantly arises owing to the decay of {omega} meson. The calculated results reproduce the measured {pi}{sup 0}{gamma} invariant mass distribution spectra very well.
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