Strange nucleon form factors: Solitonic approach to GM s , GE s , $ \tilde{{G}}_{{A}}^{{p}}$ and $ \tilde{{G}}_{{A}}^{{n}}$ and comparison with world data

Abstract

We summarize the results of the chiral quark-soliton model (\( X \) QSM) concerning basically all form factors necessary to interpret the present data of the parity-violating electron scattering experiments SAMPLE, HAPPEX, A4 and G0. The results particularly focus on the recently measured asymmetries and the detailed data for various combinations of G M s , G E s , \( \tilde G_A^p \) and \( \tilde G_A^n \) at Q 2 = 0.1 GeV2. The calculations yield positive strange magnetic and electric form factors and a negative axial vector one, all being rather small. The results are very close to the combined experimental world data from parity-violating electron scattering and elastic \( \nu p \) and \( \mathop v\limits^ - p \) scattering.