Strange Magnetic Moment of The Nucleon from Lattice QCD

Abstract

We calculate the strange magnetic moment of the nucleon on a quenched $16^3\times 24$ lattice at $\beta =6.0$, and with Wilson fermions at $\kappa$ = 0.148, 0.152, and 0.154. The strange quark contribution from the disconnected insertion is estimated stochastically by employing the $Z_2$ noise method. Using an unbiased subtraction along with the help of charge conjugation and hermiticity, we reduce the error by a factor of 2 with negligible overhead. Our result is $G_M^s=-0.28\pm 0.10{\mu }_N$.

Lattice 2000 (Hadronic Matrix Elements), 4 pages 2 figs

References in corpus (1)

• Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor

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