Nucleon Electromagnetic Form Factors in a chiral constituent-quark model
P. Demetriou, S. Boffi, M. Radici, R. F. Wagenbrunn
Abstract
The electromagnetic form factors of the nucleon are calculated in an extended chiral constituent-quark model where the effective interaction is described by the exchange of pseudoscalar, vector, and scalar mesons. Two-body current-density operators, constructed consistently with the extended model Hamiltonian in order to preserve gauge invariance and current conservation, are found to give a significant contribution to the nucleon magnetic form factors and improve the estimates of the nucleon magnetic moments.
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