Studies of N^* structure from the CLAS meson electroproduction data

Abstract

The transition γ_{v}pN^* amplitudes (electrocouplings) for prominent excited nucleon states obtained in a wide area of photon virtualities offer valuable information for the exploration of the N^* structure at different distances and allow us to access the complex dynamics of non-perturbative strong interaction. The current status in the studies of γ_{v}pN^* electrocouplings from the data on exclusive meson electroproduction off protons measured with the CLAS detector at Jefferson Lab is presented. The impact of these results on exploration of the N^* structure is discussed.

7 pages, 3 figures, the invited talk at the 9th International Workshop on the Physics of Excited Nucleons, Peñiscola, Valencian Community (Spain), May 27-30, 2013

References in corpus (7)

• Extended Partial-Wave Analysis of piN Scattering Data
• A study of the $P_{11}(1440)$ and $D_{13}(1520)$ resonances from CLAS data on $ep\to e^{\prime }{\pi }^{+}{\pi }^{-}{p}^{\prime }$
• Dynamical Coupled-Channels Effects on Pion Photoproduction
• A systematic study of longitudinal and transverse helicity amplidutes in the hypercentral Constituent Quark Model
• Electroexcitation of the Roper resonance in the relativistic quark models
• Model Analysis of the $ep\to e{p}^{\prime }{\pi }^{+}{\pi }^{-}$ Electroproduction Reaction on the Proton
• Extraction of Electromagnetic Transition Form Factors for Nucleon Resonances within a Dynamical Coupled-Channels Model

Cited by in corpus (25)

• Explanation and Prediction of Observables using Continuum Strong QCD
• Nucleon and $\Delta$ elastic and transition form factors
• Completing the picture of the Roper resonance
• New Results from the Studies of the $N(1440)1/2^{+}$, $N(1520)3/2^{-}$, and $\Delta (1620)1/2^{-}$ Resonances in Exclusive $ep\to e^{\prime }{p}^{\prime }{\pi }^{+}{\pi }^{-}$ Electroproduction with the CLAS Detector
• Structure of the nucleon's low-lying excitations
• Measurements of $ep\to e^{\prime }{\pi }^{+}{\pi }^{-}{p}^{\prime }$ Cross Sections with CLAS at $1.40<W<2.0$ GeV and $2.0<Q^2<5.0$ GeV${}^2$
• Jülich-Bonn-Washington Model for Pion Electroproduction Multipoles
• First results on nucleon resonance photocouplings from the $\gamma p\to {\pi }^{+}{\pi }^{-}p$ reaction
• Electromagnetic Transition Form Factors of Baryon Resonances
• Nucleon resonance contributions to unpolarised inclusive electron scattering
• Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
• Nucleon resonances in Compton scattering
• Nucleon resonances with higher spins in soft-wall AdS/QCD
• Using the Single Quark Transition Model to predict nucleon resonance amplitudes
• Electroexcitation of nucleon resonances of the [70,1-] multiplet in a light-front relativistic quark model
• Recent results on the nucleon resonance spectrum and structure from the CLAS detector
• Exclusive ${\mathbf{\pi }}^0\mathbf{p}$ electroproduction off protons in the resonance region at photon virtualities 0.4~GeV${}^2$ $\le {\mathbf{Q}}^2\le 1$~GeV${}^2$
• Composition of low-lying $\mathbf{J}={\frac{3}{2}}^{\pm }\mathbf{\Delta }$-baryons
• Low-$Q^2$ empirical parametrizations of the $N^{\ast }$ helicity amplitudes
• Hadron Structure using Continuum Schwinger Function Methods
• Nucleon Resonance Structure Studies Via Exclusive KY Electroproduction
• Elastic and Transition Form Factors in DSEs
• ${\gamma }_{\mathbf{v}}\mathbf{N}{\mathbf{N}}^{\ast }$ Electrocouplings in Dyson-Schwinger Equations
• Excited Baryon Structure Using Exclusive Reactions with CLAS12
• Valence-quark structure N* resonances from DSEs