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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-02-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269318310049 |
| _version_ | 1818437710370570240 |
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| author | H. Takaura T. Kaneko Y. Kiyo Y. Sumino |
| author_facet | H. Takaura T. Kaneko Y. Kiyo Y. Sumino |
| author_sort | H. Takaura |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-14T17:29:00Z |
| format | Article |
| id | doaj.art-188b5a3f379c4838b09ab75d91de9b30 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-14T17:29:00Z |
| publishDate | 2019-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-188b5a3f379c4838b09ab75d91de9b302022-12-21T22:53:09ZengElsevierPhysics 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 |
| spellingShingle | H. Takaura T. Kaneko Y. Kiyo Y. Sumino Determination of αs from static QCD potential with renormalon subtraction Physics Letters B |
| title | 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_short | Determination of αs from static QCD potential with renormalon subtraction |
| title_sort | determination of αs from static qcd potential with renormalon subtraction |
| url | http://www.sciencedirect.com/science/article/pii/S0370269318310049 |
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