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 Δs, the strangeness contribution to the weak axial vector couplings Δ_8 etc., strangeness contribution to the magnetic moments μ(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.

15 pages, 3 tables, to appear in PRD

References in corpus (3)

• Extraction of the pion-nucleon sigma-term from the spectrum of exotic baryons
• $x-$dependence of the quark distribution functions in the $\chi$CQM${}_{\mathrm{config}}$
• The baryon octet magnetic moments to all orders in flavor breaking; an application to the problem of the strangeness in the nucleon

Cited by in corpus (7)

• Extraction of Spin-Dependent Parton Densities and Their Uncertainties
• Spin 1/2^+, spin 3/2^+ and transition magnetic moments of low lying and charmed baryons
• Axial-vector form factors for the low lying octet baryons in the chiral quark constituent model
• Quark flavor distribution functions for the octet baryons in the chiral quark constituent model
• Strangeness and Chiral Symmetry Breaking
• Electromagnetic and Axial-Vector Form Factors of the Quarks and Nucleon
• Axial-vector charges of the spin ${\frac{1}{2}}^{+}$ and spin ${\frac{3}{2}}^{+}$ light and charmed baryons in the SU(4) chiral quark constituent model