Electromagnetic nucleon-delta transition in the perturbative chiral quark model

Abstract

We apply the perturbative chiral quark model to the gamma N -> Delta transition. The four momentum dependence of the respective transverse helicity amplitudes A(1/2) and A(3/2) is determined at one loop in the pseudoscalar Goldstone boson fluctuations. Inclusion of excited states in the quark propagator is shown to result in a reasonable description of the experimental values for the helicity amplitudes at the real photon point.

25 pages

References in corpus (12)

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Cited by in corpus (12)

• Light baryon magnetic moments and N -> Delta gamma transition in a Lorentz covariant chiral quark approach
• Electromagnetic form factors of the baryon octet in the perturbative chiral quark model
• Updated analysis of meson-nucleon sigma terms in the perturbative chiral quark model
• Axial form factor of the nucleon in the perturbative chiral quark model
• Nucleon polarizabilities in the perturbative chiral quark model
• Meson cloud contributions to baryon axial form factors
• Study of baryon octet electromagnetic form factors in perturbative chiral quark model
• Dependence of nucleon properties on pseudoscalar meson masses
• Chiral Dynamics of Baryons in a Lorentz Covariant Quark Model
• Axial transition form factors of octet baryons in the perturbative chiral quark model
• Analysis of excited quark propagator effects on neutron charge form factor
• Spectrum of the excited $N^{\ast }$ and ${\Delta }^{\ast }$ baryons in a relativistic chiral quark model