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Title: Determination of the QCD coupling from the static energy and the free energy

Abstract

We present two determinations of the strong coupling α s. The first one is from the static energy at three-loop accuracy, and may be considered an update of earlier determinations by some of us. The new analysis includes new lattice data at smaller lattice spacings, and reaches distances as short as 0.0237fm. We present a comprehensive and detailed estimate of the error sources that contribute to the uncertainty of the final result, α s(M Z) = 0.11660$$^{+0.00110}_{–0.00056}$$. The second determination is based on lattice data for the singlet free energy at finite temperature up to distances as small as 0.0081fm, from which we obtain α s(M Z) = 0.11638$$^{+0.00095}_{–0.00087}$$.

Authors:
; ; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Org.:
TUMQCD Collaboration
OSTI Identifier:
1579786
Alternate Identifier(s):
OSTI ID: 1583114
Report Number(s):
BNL-213516-2020-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ
Grant/Contract Number:  
SC0012704; FG02-00ER41132
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 100; Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Bazavov, Alexei, Brambilla, Nora, Garcia i Tormo, Xavier, Petreczky, Péter, Soto, Joan, Vairo, Antonio, and Weber, Johannes Heinrich. Determination of the QCD coupling from the static energy and the free energy. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.114511.
Bazavov, Alexei, Brambilla, Nora, Garcia i Tormo, Xavier, Petreczky, Péter, Soto, Joan, Vairo, Antonio, & Weber, Johannes Heinrich. Determination of the QCD coupling from the static energy and the free energy. United States. doi:10.1103/PhysRevD.100.114511.
Bazavov, Alexei, Brambilla, Nora, Garcia i Tormo, Xavier, Petreczky, Péter, Soto, Joan, Vairo, Antonio, and Weber, Johannes Heinrich. Wed . "Determination of the QCD coupling from the static energy and the free energy". United States. doi:10.1103/PhysRevD.100.114511.
@article{osti_1579786,
title = {Determination of the QCD coupling from the static energy and the free energy},
author = {Bazavov, Alexei and Brambilla, Nora and Garcia i Tormo, Xavier and Petreczky, Péter and Soto, Joan and Vairo, Antonio and Weber, Johannes Heinrich},
abstractNote = {We present two determinations of the strong coupling αs. The first one is from the static energy at three-loop accuracy, and may be considered an update of earlier determinations by some of us. The new analysis includes new lattice data at smaller lattice spacings, and reaches distances as short as 0.0237fm. We present a comprehensive and detailed estimate of the error sources that contribute to the uncertainty of the final result, αs(MZ) = 0.11660$^{+0.00110}_{–0.00056}$. The second determination is based on lattice data for the singlet free energy at finite temperature up to distances as small as 0.0081fm, from which we obtain αs(MZ) = 0.11638$^{+0.00095}_{–0.00087}$.},
doi = {10.1103/PhysRevD.100.114511},
journal = {Physical Review D},
number = 11,
volume = 100,
place = {United States},
year = {2019},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.100.114511

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