Features of $\pi \Delta$ Photoproduction at High Energies

Abstract

Hybrid/exotic meson spectroscopy searches at Jefferson Lab require the accurate theoretical description of the production mechanism in peripheral photoproduction. We develop a model for $\pi \Delta$ photoproduction at high energies ($5\le E_{\text{lab}}\le 16\text{GeV}$) that incorporates both the absorbed pion and natural-parity cut contributions. We fit the available observables, providing a good description of the energy and angular dependencies of the experimental data. We also provide predictions for the photon beam asymmetry of charged pions at $E_{\text{lab}}=9\text{GeV}$ which is expected to be measured by GlueX and CLAS12 experiments in the near future.

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