Strange Magnetic Moment of The Nucleon from Lattice QCD

Details Strange Magnetic Moment of The Nucleon from Lattice QCD Strange Magnetic Moment of The Nucleon from Lattice QCD

2000-11-01

arxiv.org/abs/hep-lat/0011015v2

Nucl.Phys.Proc.Suppl. 94 (2001) 311-314

Physics

High Energy Physics

High Energy Physics - Lattice

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

Scientific paper

10.1016/S0920-5632(01)00947-1

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 $G_{M}^{s} = -0.28\pm0.10 \mu_{N}$.

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