Electromagnetic Form Factors and the Hypercentral CQM

Abstract

New results about the electromagnetic form factors of the nucleon are obtained with a semirelativistic version of the hypercentral constituent quark model (hCQM) and a relativistic current. The complex structure of the constituent quarks is taken into account implicitly by means of phenomenological constituent quark form factors. We obtain a detailed reproduction of the experimental data up to $5Ge{V}^2$, moreover our findings about constituent quark root mean square radii are of the same order than the recent ones obtained analyzing the proton structure functions.

arXiv comment11 pages, 4 figures

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• Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
• Final Analysis of Proton Form Factor Ratio Data at ${\mathbf{Q}}^2=4.0$, 4.8 and 5.6 GeV${}^2$
• Strange and nonstrange baryon spectra in the relativistic interacting quark-diquark model with a Gürsey and Radicati-inspired exchange interaction
• A systematic study of longitudinal and transverse helicity amplidutes in the hypercentral Constituent Quark Model
• Hadron structure at low Q^2
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• Relativistic quark-diquark model of baryons with a spin-isospin transition interaction
• High $Q^2$ behavior of the electromagnetic form factors in the relativistic hypercentral CQM
• Electromagnetic Form Factors in the hypercentral CQM
• The Proton Form Factor Ratio Measurements at Jefferson Lab
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• The unquenched quark model
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• Hadron Spectroscopy in the Unquenched Quark Model
• Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral Constituent Quark Model
• A novel measurement of the neutron magnetic form factor from A=3 mirror nuclei
• The baryon spectroscopy: strong decays and strange suppression
• Strange and nonstrange baryon spectra in the interacting quark-diquark model
• Threshold effects in heavy quarkonium spectroscopy