scholarly journals Lattice study of the vacuum polarization function and determination of the strong coupling constant

2009 ◽  
Vol 79 (7) ◽  
Author(s):  
E. Shintani ◽  
S. Aoki ◽  
T. W. Chiu ◽  
S. Hashimoto ◽  
T. H. Hsieh ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Vacuum Polarization ◽  
Strong Coupling Constant ◽  
Coupling Constant ◽  
Polarization Function ◽  
Vacuum Polarization Function

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

scholarly journals Determination of $\alpha_s$ in 2+1-flavor QCD through vacuum polarization function

2010 ◽  
Author(s):  
T. Onogi ◽  
Eigo Shintani ◽  
Sinya Aoki ◽  
Hidenori Fukaya ◽  
Shoji Hashimoto ◽  
...  
Keyword(s):  
Vacuum Polarization ◽  
Polarization Function ◽  
Vacuum Polarization Function

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.

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