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arXiv 1407.2128hep-ph
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NNNLO的$Υ(1S)$系统的底夸克质量

The bottom quark mass from the $Υ(1S)$ system at NNNLO

Cesar Ayala, Gorazd Cvetic, Antonio Pineda

摘要:

我们得到一个改进的测定的第一红外renormalon的极点质量(和单重态静电势)的归一化常数。对于$N_f=3$,其读数为$N_m=0.563(26)$。研究了底夸克质量测定中的粲夸克效应。最后,我们用$Υ(1S)$质量的NNNLO微扰表达式确定了底夸克质量。我们的工作在renormalon减去计划,这使我们能够控制由于极质量renormalon的微扰系列的发散。我们的结果为${\overline {\rm MS}}$质量读数${\overline m}_{b}({\overline m}_{b})=4201(43)$ MeV。

英文摘要:

We obtain an improved determination of the normalization constant of the first infrared renormalon of the pole mass (and the singlet static potential). For $N_f=3$ it reads $N_m=0.563(26)$. Charm quark effects in the bottom quark mass determination are carefully investigated. Finally, we determine the bottom quark mass using the NNNLO perturbative expression for the $Υ(1S)$ mass. We work in the renormalon subtracted scheme, which allows us to control the divergence of the perturbation series due to pole mass renormalon. Our result for the ${\overline {\rm MS}}$ mass reads ${\overline m}_{b}({\overline m}_{b})=4201(43)$ MeV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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