Strange magnetic moment of the nucleon from lattice QCD

被引：31
|
作者：
Mathur, N
Dong, SJ
机构：
[1] TRIUMF, Vancouver, BC V6T 2A3, Canada
[2] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2001年 / 94卷
基金：
美国国家科学基金会; 加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/S0920-5632(01)00947-1
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We calculate the strange magnetic moment of the nucleon on a quenched 16(3) x 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 +/- 010 mu (N).
引用
收藏
页码：311 / 314
页数：4
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