Nucleon Form Factors in a Relativistic Three-Quark Model

1996/12/25 by M. A. Ivanov, Ivanov, M. A., M. P. Locher +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9612465

Talk presented at the XIII International Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quantum Chromodynamics", Dubna, Russia, 2-7 Sept. 1996, 8 pages, LaTeX, 6 Figures, 1 Table

arxiv created 1996/12/25 · arxiv updated 2009/11/30

Abstract

We report the calculation of electromagnetic form factors of nucleons within a relativistic three-quark model with Gaussian shape for the nucleon-quark vertex. The allowed region for two adjustable parameters, the range parameter Λ_N in the Gaussian and the constituent quark mass m_q, is obtained from fitting the data for magnetic moments and electromagnetic radii of nucleons. It is found that their values calculated with m_q=420 MeV and Λ_N=1.25 GeV agree very well with the experimental data. It is turned out that the electric proton and magnetic nucleon form factors fall faster than the dipole fit of the experimental data for momentum transfers 0≤ Q²≤ 1 GeV².

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