Strange vector form factors of the nucleon in the SU(3) chiral quark-soliton model with the proper kaonic cloud

Abstract

The strange vector form factors are evaluated in the range between $Q^2=0$ and $Q^2=1\text{mbox}{GeV}^2$ in the framework of the SU(3) chiral quark-soliton model (or semi-bosonized SU(3) Nambu-Jona-Lasinio model). The rotational $1/N_c$ and $m_s$ corrections are taken into account up to linear order. Taking care of a proper Yukawa-tail of the kaonic cloud, we get $⟨r^2{⟩}_s^{\mathrm{Sachs}}=-0.095\text{mbox}{fm}^2$ and ${\mu }_s=-0.68{\mu }_N$. The results are compared with several different models.

Comments: 27 pages with 8 figures. RevTeX and epsfig.sty are used. Submitted to Nucl. Phys. A