Form Factors of the Nucleon in a Selfconsistent Chiral Model

C. Arias Tobena; M. F. Gari

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arXiv · hep-ph/0008304

Form Factors of the Nucleon in a Selfconsistent Chiral Model

C. Arias Tobena·M. F. Gari

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Abstract

In the present paper we extend the Schwinger model of the nucleon to the inclusion of loop corrections. Starting from a chiral model of nucleon and delta for the mesons $π,ρ$ and $A_1$ we extend our nonperturbative sefconsistent regularisation scheme to the calculation of the nucleon form factors. Chiral symmetry requires loops according to the interactions ${\cal L}_{ππρ}, {\cal L}_{ρρρ}, {\cal L}_{ρπA_1}, {\cal L}_{ρA_1 A_1}$.The coupling constants are strictly introduced by chiral symmetry. The use of low energy theorems and SU(3) relations allow an otherwise parameterfree calculation of the form factors of the nucleon.

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C. Arias Tobena, M. F. Gari. 2000-08-29. Form Factors of the Nucleon in a Selfconsistent Chiral Model. https://arxiv.org/abs/hep-ph/0008304

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