The strangeness content of the nucleon

Abstract

We evaluate the matrix element of $\bar{q}q$ in hadron states on a lattice. We find substantial mixing of the connected and disconnected contributions so that the lattice result that the disconnected contribution to the nucleon is large does not imply that the $\bar{s}s$ content is large. This has implications for dark matter searches.

arXiv commentcontribution to Lattice2001(matrixelement)

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• Strategies for Determining the Nature of Dark Matter
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• Two radiative inverse seesaw models, dark matter, and baryogenesis
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• Varying alpha, thresholds and extra dimensions
• Lepton-flavor-violating decays L->l gamma gamma as a new probe of supersymmetry with broken R-parity
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• Physics results from dynamical overlap fermion simulations
• The strange quark content of the nucleon in 2+1 flavor lattice QCD
• Hadron Structure on the Lattice
• Matrix elements and baryon spectroscopy from unquenched lattice QCD with improved staggered quarks
• Determination of Dark Matter Properties at High-Energy Colliders