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arXiv 2005.06487hep-ph
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三圈重夸克的动力学质量

The Kinetic Heavy Quark Mass to Three Loops

Matteo Fael, Kay Schönwald, Matthias Steinhauser

摘要:

我们计算三圈修正的重夸克质量之间的关系定义在极和动力学计划。利用已知的极质量和$\overline{\rm MS}$夸克质量之间的关系,我们可以建立动力学质量、$\overline{\rm MS}$粲质量和底质量之间的精确关系。与两个环路相比,精度提高了2到3倍。我们的研究结果构成了重要成分的Cabibbo-Kobayashi-Maskawa矩阵元$|V_{cb}|$在Belle~II的精确测定。

英文摘要:

We compute three-loop corrections to the relation between the heavy quark masses defined in the pole and kinetic schemes. Using known relations between the pole and $\overline{\rm MS}$ quark masses we can establish precise relations between the kinetic and $\overline{\rm MS}$ charm and bottom masses. As compared to two loops, the precision is improved by a factor two to three. Our results constitute important ingredients for the precise determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ at Belle~II.

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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