scholarly journals Low energy determination of the QCD strong coupling constant on the lattice

2016 ◽  
Vol 31 (30) ◽  
pp. 1630033
Author(s):  
Yu Maezawa ◽  
Peter Petreczky
Keyword(s):  
Strong Coupling ◽  
Strong Coupling Constant ◽  
Low Energy ◽  
Coupling Constant ◽  
Lattice Quantum Chromodynamics ◽  
A Value ◽  
Lattice Quantum ◽  
Pseudo Scalar ◽  
Energy Determination

We present a determination of the strong coupling constant from lattice quantum chromodynamics (QCD) using the moments of pseudo-scalar charmonium correlators calculated using highly improved staggered quark action. We obtain a value [Formula: see text], which is the lowest energy determination of the strong coupling constant so far.

scholarly journals Determination of the Strong Coupling Constant αs in Multijet Production with the ATLAS Detector at the LHC

2018 ◽  
Vol 46 ◽  
pp. 1860085
Author(s):  
Javier Llorente
Keyword(s):  
Strong Coupling ◽  
Transverse Energy ◽  
Strong Coupling Constant ◽  
Atlas Detector ◽  
Coupling Constant ◽  
Energy Correlation ◽  
A Value ◽  
Multijet Production ◽  
Global Fit

A measurement of transverse energy–energy correlations and its asymmetry in [Formula: see text] collisions recorded by the ATLAS detector at the LHC at [Formula: see text] TeV is presented. The results are used to determine the strong coupling constant [Formula: see text]. A global fit to the transverse energy–energy correlation distributions yields [Formula: see text], while a global fit to the corresponding asymmetry distributions yields a value of [Formula: see text].

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 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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