Strange form factors in the context of SAMPLE, HAPPEX, and A4 experiments

Abstract

The strange properties of the nucleon are investigated within the framework of the SU(3) chiral quark-soliton model assuming isospin symmetry and applying the symmetry conserving SU(3) quantization. We present the form factors $G_{E,M}^0(Q^2)$, $G_M^Z(Q^2)$ and the electric and magnetic strange form factors $G_{E,M}^s(Q^2)$ incorporating pion and kaon asymptotics. The results show a fairly good agreement with the recent experimental data from the SAMPLE and HAPPEX collaborations. We also present predictions for future measurements including the A4 experiment at MAMI (Mainz).

Comments: 10 pages with four figures. RevTeX4 is used. Few lines are changed. Accepted for publication in Phys.Rev. D