Nucleon Form Factors in a Relativistic Three-Quark Model

Details Nucleon Form Factors in a Relativistic Three-Quark Model Nucleon Form Factors in a Relativistic Three-Quark Model

1996-12-25

arxiv.org/abs/hep-ph/9612465v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at the XIII International Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quantum Chr

Scientific paper

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 $\Lambda_N$ 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 $\Lambda_N$=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 $0\le Q^2\le 1$ GeV$^2$.

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