Magnetic dipole moment of theΔ+(1232)from theγp→γπ0preaction

The $\gamma \overrightarrow{p}\gamma {\pi }^{0}p$ reaction in the $\Delta \mathrm{}\left(1232\right)\mathrm{}$-resonance region is investigated as a method to access the ${\Delta }^{+}\mathrm{}\left(1232\right)\mathrm{}$ magnetic dipole moment. The calculations are performed within the context of an effective Lagrangian model containing both the $\Delta$-resonant mechanism and a background of nonresonant contributions to the $\gamma \overrightarrow{p}\gamma {\pi }^{0}p$ reaction. Results are shown both for existing and forthcoming $\gamma \overrightarrow{p}\gamma {\pi }^{0}p$ experiments. In particular, the sensitivity of unpolarized cross sections and photon asymmetries to the ${\Delta }^{+}$ magnetic dipole moment is displayed for those forthcoming data.