论文标题
基于数据的Isospin-limit光夸克相互连接对MUON异常磁矩的贡献
Data-based determination of the isospin-limit light-quark-connected contribution to the anomalous magnetic moment of the muon
论文作者
论文摘要
我们描述了如何对$a_μ^{\ rm lo，hvp} $的最新确定，前阶的辐射吸真空极化对muon的异常磁矩的贡献，可用于提供，可从lattice，一个基于数据的depersive lattice lattice lattice lattice lattice lattions lattions latterions compliance forkerive of。 IL} $，Isospin-limit，轻quark连接的贡献，对$a_μ^{\ rm lo，hvp} $。鉴于存在此数量的许多晶格结果，这种确定是感兴趣的，这是$a_μ^{\ rm lo，hvp} $之间张力和分散性确定之间张力的新证据，以及阐明这种张力来源的愿望。将必须应用于纯粹数据驱动的分散确定的小型校正的输入，结果$ -0.93（58）\ times 10^{ - 10} $在最近的BMW晶格研究中获得，我们发现$a_μ^{\ rm lqc; \ rm lqc; \，il al} $ 10^$ 635.0（$ 635.0）如果使用Davier，Höcker，Malaescu和Zhang的那些，则使用Keshavarzi，Nomura和Teubner进行独家模式贡献，而$ 638.4（4.1）\ times 10^{ - 10} $。
We describe how recent determinations of exclusive-mode contributions to $a_μ^{\rm LO,HVP}$, the leading-order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, can be used to provide, up to small electromagnetic (EM) corrections accessible from the lattice, a data-based dispersive determination of $a_μ^{\rm lqc;\, IL}$, the isospin-limit, light-quark-connected contribution to $a_μ^{\rm LO,HVP}$. Such a determination is of interest in view of the existence of a number of lattice results for this quantity, emerging evidence for a tension between lattice and dispersive determinations of $a_μ^{\rm LO,HVP}$, and the desire to clarify the source of this tension. Taking as input for the small EM correction that must be applied to the purely data-driven dispersive determination the result $-0.93(58)\times 10^{-10}$ obtained in a recent BMW lattice study, we find $a_μ^{\rm lqc;\, IL}$ to be $635.0(2.7)\times 10^{-10}$ if the results of Keshavarzi, Nomura and Teubner are used for the exclusive-mode contributions and $638.4(4.1)\times 10^{-10}$ if instead those of Davier, Höcker, Malaescu and Zhang are used.
