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arXiv 1512.00331hep-lat
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基于导数的首阶强子对$g_μ-2$的贡献

A derivative-based approach for the leading order hadronic contribution to $g_μ-2$

Eric B. Gregory, Craig McNeile

摘要:

我们描述了一种计算首阶强子对μ子反常磁矩贡献的格点方法。我们采用晶格动量导数,在空间和时间的方向,以确定强子真空极化标量在低动量和构造一个光滑的,在这个动量区域的积分函数。该方法是测试一个六角涂抹威尔逊夸克晶格系综与物理π介子质量。

英文摘要:

We describe a lattice approach to calculating the leading-order hadronic contribution to the anomalous magnetic moment of the muon. We employ lattice momentum derivatives, in both the spatial and temporal directions, to determine the hadronic vacuum polarization scalar at low momenta and construct a smooth, intregrable function in this momentum region. The method is tested on one hex-smeared Wilson-quark lattice ensemble with physical pion masses.

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