TY - JOUR
T1 - Determination of the QCD coupling from the static energy and the free energy
AU - (TUMQCD Collaboration)
AU - Bazavov, Alexei
AU - Brambilla, Nora
AU - Garcia Tormo, Xavier I.
AU - Petreczky, Péter
AU - Soto, Joan
AU - Vairo, Antonio
AU - Weber, Johannes Heinrich
N1 - Publisher Copyright:
© 2019 authors. Published by the American Physical Society.
PY - 2019/12/18
Y1 - 2019/12/18
N2 - 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 0.0237 fm. We present a comprehensive and detailed estimate of the error sources that contribute to the uncertainty of the final result, αs(MZ)=0.11660-0.00056+0.00110. The second determination is based on lattice data for the singlet free energy at finite temperature up to distances as small as 0.0081 fm, from which we obtain αs(MZ)=0.11638-0.00087+0.00095.
AB - 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 0.0237 fm. We present a comprehensive and detailed estimate of the error sources that contribute to the uncertainty of the final result, αs(MZ)=0.11660-0.00056+0.00110. The second determination is based on lattice data for the singlet free energy at finite temperature up to distances as small as 0.0081 fm, from which we obtain αs(MZ)=0.11638-0.00087+0.00095.
UR - http://www.scopus.com/inward/record.url?scp=85077360664&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.100.114511
DO - 10.1103/PhysRevD.100.114511
M3 - Article
AN - SCOPUS:85077360664
SN - 2470-0010
VL - 100
JO - Physical Review D
JF - Physical Review D
IS - 11
M1 - 114510
ER -