N^* electroproduction amplitudes in a model with dynamical confinement

Abstract

The Roper resonance is described in a chiral version of the chromodielectric model as a cluster of three quarks in radial-orbital configuration (1s)${}^2$(2s)${}^1$, surrounded by $\pi$ and $\sigma$-meson clouds and by a chromodielectric field which assures quark dynamical confinement. Radial profiles for all fields are determined self-consistently for each baryon. Transverse $A_{1/2}$ and scalar $S_{1/2}$ helicity amplitudes for the nucleon-Roper transition are calculated. The contribution of glueball and $\sigma$-meson vibrations is estimated; although small for N(1440), the $\sigma$ contribution can be large for N(1710).

12 pages, 6 figures, uses elsevier macros

References in corpus (2)

• What is the structure of the Roper resonance?
• $\Delta$(1232) electroproduction amplitudes in chiral soliton models of the nucleon

Cited by in corpus (14)

• Electron- and neutrino-nucleus scattering from the quasielastic to the resonance region
• Pion-nucleon scattering in the Roper channel from lattice QCD
• Hybrid stars with the color dielectric and the MIT bag models
• Neutral current neutrino-nucleus interactions at intermediate energies
• Electromagnetic Transition Form Factors of Baryon Resonances
• Metastable strange matter and compact quark stars
• Electromagnetic transition form factors of the Roper resonance in effective field theory
• Pion electro-production in the Roper region in chiral quark models
• ${\gamma }^{\ast }N\to N(1710)$ transition at high momentum transfer
• Roper resonances in chiral quark models
• Nuclear response functions for the N-N*(1440) transition
• The Roper resonance: a genuine quark state or a dynamically generated structure?
• Q^2-evolution of nucleon-to-resonance transition form factors in a QCD-inspired vector-meson-dominance model
• Eta and kaon production in a chiral quark model