Direct vs. final state tensor meson photoproduction - amplitude analysis

TL;DR

This paper compares direct and final state interaction models of tensor meson photoproduction, analyzing mass distributions and amplitude structures to identify observable differences and dominant mechanisms.

Contribution

It provides a detailed amplitude analysis contrasting direct production with final state interactions in tensor meson photoproduction.

Findings

Predicted mass distributions match CLAS data for selected partial waves.

Identified amplitude structures that could distinguish production mechanisms.

Suggested observable effects indicating the dominant photoproduction process.

Abstract

Tensor meson photoproduction is described as either a direct production process or a consequence of the final state \pi\pi interactions. We calculate the mass distributions for selected partial waves and confront our predictions with the measurements of the CLAS experiment. We also point out the structures in the photoproduction amplitudes which may result in observable effects able to indicate the dominant tensor meson photoporduction mechanism.