Strange quarks and lattice QCD

Abstract

The last few years have seen a dramatic improvement in our knowledge of the strange form factors of the nucleon. With regard to the vector from factors the level of agreement between theory and experiment gives us considerable confidence in our ability to calculate with non-perturbative QCD. The calculation of the strange scalar form factor has moved significantly in the last two years, with the application of new techniques which yield values considerably smaller than believed for the past 20 years. These new values turn out to have important consequences for the detection of neutralinos, a favourite dark matter candidate. Finally, very recent lattice studies have resurrected interest in the famed H-dibaryon, with modern chiral extrapolation of lattice data suggesting that it may be only slightly unbound. We review some of the major sources of uncertainty in that chiral extrapolation.

Invited talk at the Asia-Pacific few Body Conference, Seoul Korea

References in corpus (5)

• Hadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter
• Evidence for a Bound H-dibaryon from Lattice QCD
• Nucleon sigma term and strange quark content from lattice QCD with exact chiral symmetry
• To bind or not to bind: The H-dibaryon in light of chiral effective field theory
• Strange Vector Form Factors from Parity-Violating Electron Scattering

Cited by in corpus (6)

• Focus Point Supersymmetry Redux
• Sigma terms from an SU(3) chiral extrapolation
• Dark Matter Detection in Focus Point Supersymmetry
• Low-energy Scattering and Effective Interactions of Two Baryons at $m_{\pi }\sim 450$ MeV from Lattice Quantum Chromodynamics
• Particle Physics Implications and Constraints on Dark Matter Interpretations of the CDMS Signal
• Octet and decuplet baryon $\sigma$-terms and mass decompositions