The reaction $\gamma p\to {\pi }^{\circ }{\gamma }^{\prime }p$ and the magnetic dipole moment of the ${\Delta }^{+}(1232)$ resonance

Abstract

The reaction $\gamma p\to {\pi }^{\circ }{\gamma }^{\prime }p$ has been measured with the TAPS calorimeter at the Mainz Microtron accelerator facility MAMI for energies between $\sqrt{s}$ = 1221--1331 MeV. Cross sections differential in angle and energy have been determined for all particles in the final state in three bins of the excitation energy. This reaction channel provides access to the magnetic dipole moment of the ${\Delta }^{+}(1232)$ resonance and, for the first time, a value of ${\mu }_{{\Delta }^{+}}=(2.7_{-1.3}^{+1.0}(stat.)\pm 1.5(syst.)\pm 3(theo.)){\mu }_N$ has been extracted.

References in corpus (6)

• Decuplet Baryon Structure from Lattice QCD
• Electromagnetic Moments of the Baryon Decuplet
• Magnetic moments of the SU(3) decuplet baryons in the chiral quark-soliton model
• Magnetic dipole moment of the ${\Delta }^{+}$(1232) from the $\gamma p\to \gamma {\pi }^{0}p$ reaction
• Magnetic Moments of Decuplet Baryons in Light Cone QCD
• Inelastic photon scattering and the magnetic moment of the $\Delta$ (1232) resonance

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