论文标题
在2+1+1风味晶格QCD中计算出的静态能量中的魅力质量效应
Charm mass effects in the static energy computed in 2+1+1 flavor lattice QCD
论文作者
论文摘要
我们报告了在（2+1+1）中静态能量的分析 - 在宽范围的晶格间距和几个夸克质量上含有QCD。我们获得了静态能量到近1 fm的静态结果的结果，从而使我们能够同时确定晶格尺度$ r_2 $，$ r_1 $和$ r_0 $以及字符串张力，$σ$。虽然我们对$ {r_0}/{r_1} $和$ r_1 $ $ \sqrtσ$的结果与已发布的（2+1）-flavor结果一致，但我们对$ {r_1}/{r_1}/{r_2} $的结果显着差异与（2+1）-flavor case Case cun the Charark fulm Chark fulm car the conm a fauark car fauark farme ve fauck a fauark a cect of farm fauke verm fauke。我们通过将我们对最佳晶格的结果与先前发表的（2+1）-Fravor QCD结果进行比较，详细研究了魅力夸克对静态能量的影响。晶格结果与构成有限符质量效应的静态能量的两环扰动表达非常吻合。
We report our analysis for the static energy in (2+1+1)-flavor QCD over a wide range of lattice spacings and several quark masses. We obtain results for the static energy out to distances of nearly 1 fm, allowing us to perform a simultaneous determination of the lattice scales $r_2$, $r_1$ and $r_0$ as well as the string tension, $σ$. While our results for ${r_0}/{r_1}$ and $r_0$ $\sqrtσ$ agree with published (2+1)-flavor results, our result for ${r_1}/{r_2}$ differs significantly from the value obtained in the (2+1)-flavor case, likely due to the effect of the charm quark. We study in detail the effect of the charm quark on the static energy by comparing our results on the finest lattices with the previously published (2+1)-flavor QCD results at similar lattice spacing. The lattice results agree well with the two-loop perturbative expression of the static energy incorporating finite charm mass effects.
