Strange quark content of the nucleon

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We discuss the calculation of disconnected diagrams needed for determining the strange quark content of the nucleon on the lattice.

• We present results for the strange scalar form factor and the related parameter f_Ts, which enters into the cross-section for the scattering of dark matter off nuclei in supersymmetric extensions of the standard model.
• In addition, we present results for the strange contribution to the nucleon's axial and electromagnetic form factors.
• The calculations were performed with two dynamical flavors of Wilson fermions on a 24^3 x 64 anisotropic lattice with a_s = 3a_t = 0.11 fm and M_pi ~ 400 MeV.