Today's View on Strangeness

Abstract

There are several different experimental indications, such as the pion-nucleon sigma term and polarized deep-inelastic scattering, which suggest that the nucleon wave function contains a hidden s bar s component. This is expected in chiral soliton models, which also predicted the existence of new exotic baryons that may recently have been observed. Another hint of hidden strangeness in the nucleon is provided by copious phi production in various N bar N annihilation channels, which may be due to evasions of the Okubo-Zweig-Iizuka rule. One way to probe the possible polarization of hidden s bar s pairs in the nucleon may be via Lambda polarization in deep-inelastic scattering.

8 pages LaTeX, 10 figures, to appear in the Proceedings of the International Conference on Parity Violation and Hadronic Structure, Grenoble, June 2004

References in corpus (6)

• Observation of an Exotic S = -2, Q = -2 Baryon Resonance in Proton-Proton Collisions at the CERN SPS
• Measurement of Strange Quark Contributions to the Nucleon's Form Factors at Q^2=0.230 (GeV/c)^2
• The Strange Quark Contribution to the Proton's Magnetic Moment
• Experimental Limits on the Width of the Reported Theta(1540)+
• Chiral-Soliton Predictions for Exotic Baryons
• The width of ${\Theta }^{+}$ for large $N_c$ in chiral quark soliton model

Cited by in corpus (6)

• Spin and Flavor Strange Quark Content of the Nucleon
• $\Lambda$$\Lambda$ interactions in finite-density QCD sum rules
• Quark flavor distribution functions for the octet baryons in the chiral quark constituent model
• Catalytic phi meson production in heavy-ion collisions
• Strangeness and Chiral Symmetry Breaking
• Matrix elements and baryon spectroscopy from unquenched lattice QCD with improved staggered quarks