Electro-excitation amplitudes of the Delta-isobar in the Skyrme model

Abstract

Electro magnetic transition form factors for the excitation of the Delta33-resonance are evaluated in the Skyrme model. They crucially rely on rotationally induced deformations of the hedgehog soliton which are suppressed by two N_C-orders as compared to the leading parts of the isovector current. Partial photon coupling through vector mesons is included in a schematic way. Recoil corrections are approximated by a boost to the equal-velocity frame. The results for the photodecay amplitudes agree with experimental numbers and the shapes of M1, E2, C2 - transition form factors show essential features as observed in electro-excitation experiments.

15 pages, LaTeX, 4 PS figures. Revised version, more references and 1 figure added

References in corpus (1)

• Baryons as Solitons in Effective Chiral Field Theories

Cited by in corpus (15)

• Electromagnetic excitation of the Delta(1232)-resonance
• $Q^2$ Dependence of Quadrupole Strength in the ${\gamma }^{\ast }p\to {\Delta }^{+}(1232)\to p{\pi }^0$ Transition
• Measurement of the Polarized Structure Function ${\sigma }_{L{T}^{\prime }}$ for $p(\vec{e},e^{\prime }p){\pi }^o$ in the $\Delta (1232)$ Resonance Region
• Delta and Omega electromagnetic form factors in a Dyson-Schwinger/Bethe-Salpeter approach
• Nucleon to Delta electromagnetic transition in the Dyson-Schwinger approach
• Measurement of the LT-asymmetry in π^0 electroproduction at the energy of the Δ(1232) resonance
• Delta-baryon mass in a covariant Faddeev approach
• Electromagnetic Nucleon-to-Delta Transition in Holographic QCD
• Strangeness Dependence in Radiative Hyperon Decay Amplitudes
• The electroproduction of the $\Delta$(1232) in the chiral quark-soliton model
• Transition magnetic moments of $J^P={\frac{3}{2}}^{+}$ decuplet to $J^P={\frac{1}{2}}^{+}$ octet baryons in the chiral constituent quark model
• $\Delta$(1232) electroproduction amplitudes in chiral soliton models of the nucleon
• Electromagnetic transition form factors, $E2/M1$ and $C2/M1$ ratios of the baryon decuplet
• Q^2-evolution of nucleon-to-resonance transition form factors in a QCD-inspired vector-meson-dominance model
• Electromagnetic and weak hyperon properties in the Skyrme model