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arXiv 1208.4850hep-phhep-lat
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来自QCD中静态能量的alpha_s

alpha_s from the static energy in QCD

Xavier Garcia i Tormo

摘要:

通过对短距离量子色动力学中静能的微扰计算和格子计算的比较,得到了强耦合α_s的确定。我们的测定是在大约1.5 GeV的尺度(晶格数据的典型距离尺度)下进行的,当演化到Z玻色子质量尺度M_Z时,它对应于alpha_s(M_Z)=0.1156^{+0.0021}_{-0.0022}。

英文摘要:

Comparing perturbative calculations with a lattice computation of the static energy in quantum chromodynamics at short distances, we obtain a determination of the strong coupling alpha_s. Our determination is performed at a scale of around 1.5 GeV (the typical distance scale of the lattice data) and, when evolved to the Z-boson mass scale M_Z, it corresponds to alpha_s(M_Z)=0.1156^{+0.0021}_{-0.0022}.

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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