论文标题
晶格QCD的强耦合常数和夸克质量
Strong coupling constant and quark masses from lattice QCD
论文作者
论文摘要
我们回顾了魅力和底部夸克质量的晶格确定以及通过不同方法获得的强耦合常数。我们解释了有效的现场理论方法，例如非相关性QCD（NRQCD），潜在的非权威主义QCD（PNRQCD），重型夸克有效理论（HQET）和重脑子的全高性手性扰动理论（HMRAS $χ$ PT）如何帮助这些确定。在批判性地审查了不同的晶格结果之后，我们确定晶格世界的平均值，$α_s（m_z，n_f {=} 5）= 0.11803^{+0.00047} _ { - 0.00068} $ $ m_c（m_c，n_f {=} 4）= 1.2735（35）$ gev和底部夸克质量，$ m_b（m_b，n_f，n_f {=} 5）= 4.188（10）$ gev。上述确定比粒子数据组（PDG）获得的确定更精确。
We review lattice determinations of the charm and bottom quark masses and the strong coupling constant obtained by different methods. We explain how effective field theory approaches, such as Non-Relativistic QCD (NRQCD), potential Non-Relativistic QCD (pNRQCD), Heavy Quark Effective Theory (HQET) and Heavy Meson rooted All-Staggered Chiral Perturbation Theory (HMrAS$χ$PT) can help in these determinations. After critically reviewing different lattice results we determine lattice world averages for the strong coupling constant, $α_s(M_Z,N_f{=}5)=0.11803^{+0.00047}_{-0.00068}$, as well as for the charm quark mass, $m_c(m_c,N_f{=}4)=1.2735(35)$ GeV, and the bottom quark mass, $m_b(m_b,N_f{=}5)=4.188(10)$ GeV. The above determinations are more precise than the ones obtained by Particle Data Group (PDG).
