Determination of αs from static QCD potential with renormalon subtraction

Determination of αs from static QCD potential with renormalon subtraction
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通过重整减法从静态 QCD 电位确定 αs

DOI:
10.1016/j.physletb.2018.12.060
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发表时间:
2019
期刊:
Physics Letters
影响因子:
--
通讯作者:
Y. Sumino
Y. Sumino
中科院分区:
--
文献类型:
--
作者:
H. Takaura;T. Kaneko;Y. Kiyo;Y. Sumino

文献摘要

相似文献

我们将格点结果与理论计算相匹配,由静态QCD势确定了强耦合常数α s(MZ).我们使用了一个新的理论框架的基础上运营商产品的扩展(OPE),其中重正子减去领先的威尔逊系数。我们发现我们的OPE预言可以解释在Λ QCD r = 0.8处的晶格数据。这允许我们在匹配中使用更大的窗口,这导致更可靠的确定。我们得到α s(M Z)= 0.1179− 0.0014+ 0.0015。
We determine the strong coupling constant α s (M Z) from the static QCD potential by matching a lattice result and a theoretical calculation. We use a new theoretical framework based on operator product expansion (OPE), where renormalons are subtracted from the leading Wilson coefficient. We find that our OPE prediction can explain the lattice data at Λ QCD r≲ 0.8. This allows us to use a larger window in matching, which leads to a more reliable determination. We obtain α s (M Z)= 0.1179− 0.0014+ 0.0015.