Spin and Flavor Strange Quark Content of the Nucleon

Abstract

Several spin and flavor dependent parameters characterizing the strangeness content of the nucleon have been calculated in the chiral constituent quark model with configuration mixing (\chiCQM_{config}) which is known to provide a satisfactory explanation of the ``proton spin crisis'' and related issues. In particular, we have calculated the strange spin polarization \Delta s, the strangeness contribution to the weak axial vector couplings \Delta_8 etc., strangeness contribution to the magnetic moments \mu(p)^s etc., the strange quark flavor fraction f_s, the strangeness dependent quark flavor ratios \frac{2 \bar s}{u+d} and \frac{2 \bar s}{\bar u+ \bar d} etc.. Our results are consistent with the recent experimental observations.

Comments: 15 pages, 3 tables, to appear in PRD