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arXiv 1902.08148hep-phhep-latnucl-th
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具有物理夸克质量的畴壁格点量子色动力学规范扇区的强运行耦合

The strong running coupling from the gauge sector of Domain Wall lattice QCD with physical quark masses

S. Zafeiropoulos, Ph. Boucaud, F. De Soto, J. Rodríguez-Quintero, J. Segovia

摘要:

我们报告的第一次计算的强运行耦合的物理点(物理π介子质量)从鬼胶子顶点,计算晶格模拟与三种口味的域壁费米子。我们发现$α_{\overline{\rm MS}}(m_Z^2)=0.1172(11)$与世界平均水平非常一致。我们的计算桥梁,这个值是泰勒计划强耦合,这已被发现的极大兴趣,因为它本身可以直接相关的夸克胶子相互作用内核连续的方法来QCD束缚态问题。

英文摘要:

We report on the first computation of the strong running coupling at the physical point (physical pion mass) from the ghost-gluon vertex, computed from lattice simulations with three flavors of Domain Wall fermions. We find $α_{\overline{\rm MS}}(m_Z^2)=0.1172(11)$, in remarkably good agreement with the world-wide average. Our computational bridge to this value is the Taylor-scheme strong coupling, which has been revealed of great interest by itself because it can be directly related to the quark-gluon interaction kernel in continuum approaches to the QCD bound-state problem.

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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