Light Cone Sum Rules for gamma* N -> Delta Transition Form Factors

Abstract

A theoretical framework is suggested for the calculation of gamma* N -> Delta transition form factors using the light-cone sum rule approach. Leading-order sum rules are derived and compared with the existing experimental data. We find that the transition form factors in a several GeV region are dominated by the ``soft'' contributions that can be thought of as overlap integrals of the valence components of the hadron wave functions. The ``minus'' components of the quark fields contribute significantly to the result, which can be reinterpreted as large contributions of the quark orbital angular momentum

38 pages, 10 figures; some typos fixed and references added, to appear in Phys. Rev. D

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• Electromagnetic nucleon form factors from QCD sum rules
• Light-Cone Sum Rules
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Cited by in corpus (44)

• Electromagnetic excitation of the Delta(1232)-resonance
• Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
• Electroexcitation of nucleon resonances
• Nucleon Form Factors in QCD
• Measurement of the N to Delta(1232) Transition at High Momentum Transfer by pi0 Electroproduction
• Rare Decays of Λ_b->Λ+ γand Λ_b ->Λ+ l^{+} l^{-} in the Light-cone Sum Rules
• Light baryon magnetic moments and N -> Delta gamma transition in a Lorentz covariant chiral quark approach
• gamma-Z corrections to forward-angle parity-violating e-p scattering
• D-state effects in the electromagnetic N-Delta transition
• A Covariant model for the nucleon and the $\Delta$
• Nucleon Form Factors and Distribution Amplitudes in QCD
• Distribution amplitudes of $\Sigma$ and $\Lambda$ and their electromagnetic form factors
• A model for the Delta(1600) resonance and gamma N -> Delta(1600) transition
• The Nucleon Distribution Amplitudes and their application to nucleon form factors and the $N\to \Delta$ transition at intermediate values of $Q^2$
• Electroproduction of the $N^{\ast }(1535)$ nucleon resonance in QCD
• Rôle of the pion electromagnetic form factor in the $\Delta (1232)\to {\gamma }^{\ast }N$ timelike transition
• Semileptonic ${\Lambda }_{b,c}$ to Nucleon Transitions in Full QCD at Light Cone
• Exclusive meson pair production in gamma* gamma scattering at small momentum transfer
• Improved analysis on the semi-leptonic decay ${\Lambda }_c\to \Lambda {\ell }^{+}\nu$ from QCD light-cone sum rules
• Deep Inelastic Pion Electroproduction at Threshold
• Electromagnetic Nucleon-to-Delta Transition in Holographic QCD
• Light Cone QCD Sum Rules Analysis of the Axial N -> Delta Transition Form Factors
• Nucleon Form Factors to Next-to-Leading Order with Light-Cone Sum Rules
• Analysis of the $\Sigma -n$ form factors with light-cone QCD sum rules
• Light-cone sum rules for the $N\gamma \Delta$ transitions for real photons
• Scalar form-factor of the proton with light-cone QCD sum rules
• Enhancement effects in exclusive $\pi \pi$ and $\rho \pi$ production in ${\gamma }^{\ast }\gamma$ scattering
• Nucleon-to-Delta transition form factors in chiral effective field theory using the complex-mass scheme
• Strong decay ${\Delta }^{++}\to p\pi$ with light-cone QCD sum rules
• N to $\Delta$ transition amplitudes from QCD sum rules
• Nucleon form factors induced by isovector and isoscalar axial-vector currents in QCD
• Electromagnetic transition form factors, $E2/M1$ and $C2/M1$ ratios of the baryon decuplet
• Exploring Baryon Resonances with Transition Generalized Parton Distributions: Status and Perspectives
• Strong decays ${\Sigma }^{\ast }\to \Sigma \pi ,\Lambda \pi$ and related strong coupling constant
• Q^2-evolution of nucleon-to-resonance transition form factors in a QCD-inspired vector-meson-dominance model
• Scalar form factor of the nucleon and nucleon--scalar meson coupling constant in QCD
• Tree Level Semileptonic ${\Sigma }_b$ to Nucleon Decay in Light Cone QCD Sum Rules
• Electromagnetic transitions among octet and decuplet baryons in QCD
• Low-Q^2 scaling behavior of the form-factor ratios for the NΔ(1232)-transition
• Flavor Changing Neutral Currents Transition of the ${\Sigma }_Q$ to Nucleon in Full QCD and Heavy Quark Effective Theory
• ${\gamma }^{\ast }N\to {\Delta }^{+}(1600)$ transition form factors in light-cone sum rules
• Generalized Parton Distributions of Pions. Spin Structure of Hadrons
• Semileptonic decay of double strangeness heavy flavor baryons
• Light-cone sum rules for radial excitation of decuplet to octet baryons electromagnetic transition form factors