Determination of αs from static QCD potential with renormalon subtraction

Determination of αs from static QCD potential with renormalon subtraction

We determine the strong coupling constant αs(MZ) 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...

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Main Authors: H. Takaura, T. Kaneko, Y. Kiyo, Y. Sumino
Format: Article
Language:English
Published: Elsevier 2019-02-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269318310049
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spelling doaj-188b5a3f379c4838b09ab75d91de9b302020-11-25T02:38:59ZengElsevierPhysics Letters B0370-26932019-02-01789598602Determination of αs from static QCD potential with renormalon subtractionH. Takaura0T. Kaneko1Y. Kiyo2Y. Sumino3Department of Physics, Kyushu University, Fukuoka, 819-0395, Japan; Corresponding author.Theory Center, KEK, Tsukuba, Ibaraki, 305-0801, JapanDepartment of Physics, Juntendo University, Inzai, 270-1695, JapanDepartment of Physics, Tohoku University, Sendai, 980-8578, JapanWe determine the strong coupling constant αs(MZ) 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 ΛQCDr≲0.8. This allows us to use a larger window in matching, which leads to a more reliable determination. We obtain αs(MZ)=0.1179−0.0014+0.0015.http://www.sciencedirect.com/science/article/pii/S0370269318310049
collection DOAJ
language English
format Article
sources DOAJ
author H. Takaura
T. Kaneko
Y. Kiyo
Y. Sumino
spellingShingle H. Takaura
T. Kaneko
Y. Kiyo
Y. Sumino
Determination of αs from static QCD potential with renormalon subtraction
Physics Letters B
author_facet H. Takaura
T. Kaneko
Y. Kiyo
Y. Sumino
author_sort H. Takaura
title Determination of αs from static QCD potential with renormalon subtraction
title_short Determination of αs from static QCD potential with renormalon subtraction
title_full Determination of αs from static QCD potential with renormalon subtraction
title_fullStr Determination of αs from static QCD potential with renormalon subtraction
title_full_unstemmed Determination of αs from static QCD potential with renormalon subtraction
title_sort determination of αs from static qcd potential with renormalon subtraction
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2019-02-01
description We determine the strong coupling constant αs(MZ) 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 ΛQCDr≲0.8. This allows us to use a larger window in matching, which leads to a more reliable determination. We obtain αs(MZ)=0.1179−0.0014+0.0015.
url http://www.sciencedirect.com/science/article/pii/S0370269318310049
work_keys_str_mv AT htakaura determinationofasfromstaticqcdpotentialwithrenormalonsubtraction
AT tkaneko determinationofasfromstaticqcdpotentialwithrenormalonsubtraction
AT ykiyo determinationofasfromstaticqcdpotentialwithrenormalonsubtraction
AT ysumino determinationofasfromstaticqcdpotentialwithrenormalonsubtraction
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