On the strange vector form factors of the nucleon in the NJL soliton model

On the strange vector form factors of the nucleon in the NJL soliton model y ABSTRACT Within the Nambu{Jona{Lasinio model strange degrees of freedom are incorporated into the soliton picture using the collective approach of Yabu and Ando. The form factors of the nucleon associated with the nonet vector current are extracted. The numerical results provide limits for the strange magnetic moment: 00:05 s 0:25. For the strange magnetic form factor of the nucleon the valence quark and vacuum contributions add coherently while there are signicant cancellations for the strange electric form factor. |||||| y Supported by the Deutsche Forschungsgemeinschaft (DFG) under contract number Re{856/2-2. z Supported by a Habilitanden scholarship of the DFG.