Determination of αs from static QCD potential with renormalon subtraction
Determination of αs from static QCD potential with renormalon subtraction
复制标题
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:
影响因子:
--
通讯作者:
Y. Sumino
中科院分区:
文献类型:
--
作者:
H. Takaura;T. Kaneko;Y. Kiyo;Y. Sumino
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.