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arXiv · 1612.02071

Reggeized model for $\gamma p \to \rho^- \Delta^{++}(1232)$ photoproduction

Byung-Geel Yu·Kook-Jin Kong
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Abstract

A model for the reaction $\gamma p\to\rho^-\Delta^{++}$ is presented with the $t$-channel $\pi+\rho$ exchanges reggeized to describe the reaction up to high energies. Gauge invariance of $\rho$ exchange is discussed in connection with the convergence of the reaction cross section at high energy. The roles of electromagnetic (EM) multipole moments of $\Delta^{++}$ baryon and of $\rho^-$ meson are analyzed in total and differential cross sections and spin density matrix elements. Photon polarization asymmetry $\Sigma$ is predicted for a measurement of electromagnetic moments of $\rho^-$ and of $\Delta^{++}$.

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Byung-Geel Yu, Kook-Jin Kong. 2016-12-06. Reggeized model for $\gamma p \to \rho^- \Delta^{++}(1232)$ photoproduction. https://doi.org/10.1088/1361-6471%2Fab3d10

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