TY - JOUR
T1 - Determination of αs from the QCD static energy
T2 - An update
AU - Bazavov, Alexei
AU - Brambilla, Nora
AU - Garcia I Tormo, Xavier
AU - Petreczky, Péter
AU - Soto, Joan
AU - Vairo, Antonio
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/10/31
Y1 - 2014/10/31
N2 - We present an update of our determination of the strong coupling αs from the quantum chromodynamics static energy. This updated analysis includes new lattice data, at smaller lattice spacings and reaching shorter distances, the use of better suited perturbative expressions to compare with data in a wider distance range, and a comprehensive and detailed estimate of the error sources that contribute to the uncertainty of the final result. Our updated value for αs at the Z-mass scale, MZ, is αs(MZ)=0.1166-0.0008+0.0012, which supersedes our previous result.
AB - We present an update of our determination of the strong coupling αs from the quantum chromodynamics static energy. This updated analysis includes new lattice data, at smaller lattice spacings and reaching shorter distances, the use of better suited perturbative expressions to compare with data in a wider distance range, and a comprehensive and detailed estimate of the error sources that contribute to the uncertainty of the final result. Our updated value for αs at the Z-mass scale, MZ, is αs(MZ)=0.1166-0.0008+0.0012, which supersedes our previous result.
UR - http://www.scopus.com/inward/record.url?scp=84911059455&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.90.074038
DO - 10.1103/PhysRevD.90.074038
M3 - Article
AN - SCOPUS:84911059455
SN - 1550-7998
VL - 90
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 7
M1 - 074038
ER -