Electromagnetic N->Delta transition and neutron form factors

Abstract

The C2/M1 ratio of the electromagnetic N->Delta(1232) transition, which is important for determining the geometric shape of the nucleon, is shown to be related to the neutron elastic form factor ratio G_C^n/G_M^n. The proposed relation holds with good accuracy for the entire range of momentum transfers where data are available.

4 pages, 2 figures

References in corpus (19)

• Spin-Flavor Structure of Large N Baryons
• $Q^2$ Dependence of Quadrupole Strength in the ${\gamma }^{\ast }p\to {\Delta }^{+}(1232)\to p{\pi }^0$ Transition
• Electroproduction of the Delta Resonance at High Momentum Transfer
• Measurements of GEn/GMn from the ^2H(vec{e},e'vec{n})^1H Reaction to Q^2=1.45 (GeV/c)^2
• Electromagnetic Properties of the Delta(1232)
• Search for Quadrupole Strength in the Electro-excitation of the Delta(1232)
• Effect of recent R_p and R_n measurements on extended Gari-Krumpelmann model fits to nucleon electromagnetic form factors
• Measurement of the recoil polarization in the p (\vec e, e' \vec p) pi^0 reaction at the Δ(1232) resonance
• Intrinsic quadrupole moment of the nucleon
• Quadrupole Moments of N and Delta in the 1/N_c Expansion
• Quadrupole moments of baryons
• Delta --> N gamma in Large-Nc QCD
• Measurement of the beam-helicity asymmetry in the p(e_pol,e'p)pi_0 reaction at the energy of the Delta(1232) resonance
• Complete Analysis of Baryon Magnetic Moments in 1/N_c
• Deviation of the Nucleon Shape From Spherical Symmetry: Experimental Status
• Moments of the neutron charge form factor and the N->Delta quadrupole transition
• Determination of SU(6) Clebsch-Gordan Coefficients and Baryon Mass and Electromagnetic Moment Relations
• Delta-to-N-gamma Coulomb Quadrupole Amplitude in PQCD
• Relations between Electromagnetic Form Factors of Baryons

Cited by in corpus (36)

• Unitary Isobar Model - MAID2007
• Electromagnetic excitation of the Delta(1232)-resonance
• Explanation and Prediction of Observables using Continuum Strong QCD
• Electroexcitation of nucleon resonances
• Electromagnetic Excitation of Nucleon Resonances
• Nucleon and $\Delta$ elastic and transition form factors
• Light baryon magnetic moments and N -> Delta gamma transition in a Lorentz covariant chiral quark approach
• D-state effects in the electromagnetic N-Delta transition
• Elastic and transition form factors of the Δ(1232)
• Light Cone Sum Rules for gamma* N -> Delta Transition Form Factors
• Nucleon to Delta electromagnetic transition in the Dyson-Schwinger approach
• Insights into the gamma* N -> Delta transition
• Measurement of the neutron charge radius and the role of its constituents
• Recoil Polarization Measurements for Neutral Pion Electroproduction at Q^2=1 (GeV/c)^2 Near the Delta Resonance
• Large-$N_c$ relations for the electromagnetic N to Delta(1232) transition
• Electromagnetic Transition Form Factors of Baryon Resonances
• Baryon Resonance Analysis from MAID
• Magnetic moments of $J^P={\frac{3}{2}}^{+}$ decuplet baryons using effective quark masses in chiral constituent quark model
• Electromagnetic Nucleon-to-Delta Transition in Holographic QCD
• Nucleon resonances in Compton scattering
• Quadrupole moments of low lying baryons with spin 1/2^+, spin 3/2^+, and spin 3/2^+ \to 1/2^+ transitions
• Parametrizations of the ${\gamma }^{\ast }N\to \Delta (1232)$ quadrupole form factors and Siegert's theorem
• Improved empirical parametrizations of the ${\gamma }^{\ast }N\to \Delta (1232)$ and ${\gamma }^{\ast }N\to N(1520)$ helicity amplitudes and the Siegert's theorem
• New low-$Q^2$ measurements of the ${\gamma }^{\ast }N\to \Delta (1232)$ Coulomb quadrupole form factor, pion cloud parametrizations and Siegert's theorem
• Transition magnetic moments of $J^P={\frac{3}{2}}^{+}$ decuplet to $J^P={\frac{1}{2}}^{+}$ octet baryons in the chiral constituent quark model
• Low-$Q^2$ empirical parametrizations of the $N^{\ast }$ helicity amplitudes
• Nucleon deformation and atomic spectroscopy
• Non-spherical proton shape and hydrogen hyperfine splitting
• Q^2-evolution of nucleon-to-resonance transition form factors in a QCD-inspired vector-meson-dominance model
• Electromagnetic multipole moments of baryons
• Combined parametrization of the neutron electric form factor and the ${\gamma }^{\ast }N\to \Delta (1232)$ quadrupole form factors
• Neutron structure effects in the deuteron and one neutron halos
• ${\gamma }_{\mathbf{v}}\mathbf{N}{\mathbf{N}}^{\ast }$ Electrocouplings in Dyson-Schwinger Equations
• Ernest Henley and the shape of baryons
• Empirical parametrizations of the resonance amplitudes based on the Siegert's theorem
• Excited nucleon electromagnetic form factors from broken spin-flavor symmetry