scholarly journals Precise Determination of the Strong Coupling Constant at NNLO in QCD from the Three-Jet Rate in Electron–Positron Annihilation at LEP

2010 ◽  
Vol 104 (7) ◽  
Author(s):  
G. Dissertori ◽  
A. Gehrmann-DeRidder ◽  
T. Gehrmann ◽  
E. W. N. Glover ◽  
G. Heinrich ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Strong Coupling ◽  
Precise Determination ◽  
Strong Coupling Constant ◽  
Coupling Constant ◽  
Electron Positron Annihilation ◽  
Electron Positron

scholarly journals Precise determination of αS( $ m_{Z^0 } $ ) from a global fit of energy-energy correlations to NNLO+NNLL predictions

2019 ◽  
Vol 206 ◽  
pp. 05002
Author(s):  
A. Kardos ◽  
S. Kluth ◽  
G. Somogyi ◽  
Z. Tulipánt ◽  
A. Verbytskyi
Keyword(s):  
Strong Coupling ◽  
Precise Determination ◽  
Strong Coupling Constant ◽  
Final States ◽  
Leading Order ◽  
Coupling Constant ◽  
Global Fit ◽  
Hadronic Final States

We present a determination of the strong coupling constant αS( $ m_{Z^0 } $ ) using a global fit of theory predictions in next-to-next-next-leading-order (NNLO) combined with resummed predictions at the next-to-next-leading-log level (NNLL) [bibrR11]. The predictions are compared to distributions of energy-energy correlations measured in e+e−annihilation to hadronic final states by experiments at the e+e−colliders LEP, PETRA, TRISTAN and PEP. The predictions are corrected for hadronisation effects using the modern generator programs Sherpa 2.2.4 and Herwig 7.1.1.

scholarly journals Precise determination of the strong coupling constant inNf= 2+1 lattice QCD with the Schrödinger functional scheme

2009 ◽  
Vol 2009 (10) ◽  
pp. 053-053 ◽  
Author(s):  
PACS-CS collaboration ◽  
S Aoki ◽  
K.-I Ishikawa ◽  
N Ishizuka ◽  
T Izubuchi ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Strong Coupling ◽  
Precise Determination ◽  
Strong Coupling Constant ◽  
Coupling Constant ◽  
Functional Scheme

Comparison of e+e− annihilation with QCD and determination of the strong coupling constant

1980 ◽  
Vol 94 (3) ◽  
pp. 437-443 ◽  
Author(s):  
R. Brandelik ◽  
W. Braunschweig ◽  
K. Gather ◽  
V. Kadansky ◽  
K. Lübelsmeyer ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Strong Coupling Constant ◽  
Coupling Constant
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