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

J. Nys; V. Mathieu; C. Fernández-Ramírez; A. Jackura; M. Mikhasenko; A. Pilloni; N. Sherrill; J. Ryckebusch; A. P. Szczepaniak; G. Fox

doi:10.1016/j.physletb.2018.01.075

arXiv · 1710.09394

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

J. Nys·V. Mathieu·C. Fernández-Ramírez·A. Jackura·M. Mikhasenko·A. Pilloni·N. Sherrill·J. Ryckebusch·A. P. Szczepaniak·G. Fox

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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 ($5 \leq E_{\text{lab}} \leq 16~\text{GeV}$) 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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J. Nys, V. Mathieu, C. Fernández-Ramírez, A. Jackura, M. Mikhasenko, A. Pilloni, N. Sherrill, J. Ryckebusch, A. P. Szczepaniak, G. Fox. 2017-10-25. Features of $\pi \Delta$ Photoproduction at High Energies. https://doi.org/10.1016/j.physletb.2018.01.075

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