Chiral effective-field theory in the Delta(1232) region: II. radiative pion photoproduction

Abstract

We present a theoretical study of the radiative pion photoproduction on the nucleon ($\gamma N\to \pi N{\gamma }^{\prime }$) in the $\De$-resonance region, with the aim to determine the magnetic dipole moment (MDM) of the ${\Delta }^{+}(1232)$. The study is done within the framework of chiral effective-field theory where the expansion is performed (to next-to-leading order) in the $\delta$ power-counting scheme which is an extension of chiral perturbation theory to the $\Delta$-resonance energy region. We present the results for the absorptive part of the $\Delta$ MDM, as well as perform a sensitivity study of the dependence of $\gamma N\to \pi N{\gamma }^{\prime }$ observables on the real part of the $\Delta$ MDM. We find that an asymmetry for circular polarization of the photon beam may provide a model-independent way to measure the $\Delta$ MDM.

32 pages, 14 figs

References in corpus (5)

• Electromagnetic excitation of the Delta(1232)-resonance
• Chiral Perturbation Theory and Baryon Properties
• Chiral Effective-Field Theory in the Delta(1232) Region: Pion Electroproduction on the Nucleon
• How Large is the "Natural" Magnetic Moment?
• Magnetic dipole moment of the $\Delta (1232)$ in chiral perturbation theory

Cited by in corpus (20)

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• Magnetic moments and transition magnetic moments of $P_c$ and $P_{cs}$ states
• Hadron structure at low Q^2
• Radiative pi0 photoproduction on protons in the Delta+(1232) region
• Electromagnetic Transition Form Factors of Baryon Resonances
• Magnetic Dipole, Electric Quadrupole and Magnetic Octupole Moments of the $\Delta$ Baryons in Light Cone QCD Sum Rules
• Magnetic dipole moment of the $Z_{cs}(3985)$ state: diquark-antidiquark and molecular pictures
• Electromagnetic properties of doubly heavy pentaquark states
• Beam normal spin asymmetry for the $ep\to e\Delta (1232)$ process
• Radiative decays and magnetic moments of the predicted $B_c$-like molecules
• Exploring the magnetic dipole moments of $T_{QQ\bar{q}\bar{s}}$ and $T_{QQ\bar{s}\bar{s}}$ states in the framework of QCD light-cone sum rules
• The Delta(1232) Resonance in Chiral Effective Field Theory
• Connected Parts of Decuplet Electromagnetic Properties
• Two-current transition amplitudes with two-body final states
• Chiral Lagrangians with $\Delta (1232)$ to one loop
• Magnetic Moments of Hidden-Charm Pentaquarks in the Diquark-Diquark-Antiquark Scheme
• Magnetic and quadrupole moments of the $Z_c(4020{)}^{+}$, $Z_c(4050{)}^{+}$, and $Z_c(4600{)}^{+}$ states in the diquark-antidiquark picture
• Radiative pion photoproduction in covariant chiral perturbation theory
• The lifetime of unstable particles in electromagnetic fields
• Charting doubly strange hidden-charm pentaquarks: An electromagnetic mapping of spin-$\frac{1}{2}$ and $\frac{3}{2}$ states