出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：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 fTs, 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 243 ×64 anisotropic lattice
with as ≈ 3at ≈ 0.11 fm and Mp ≈ 400 MeV.
