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arXiv · 1711.01408

Strong coupling constant extraction from high-multiplicity Z+jets observables

Mark Johnson·Daniel Maître
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Abstract

We present a strong coupling constant extraction at Next-to-Leading Order QCD accuracy using ATLAS Z+2,3,4 jets data. This is the first extraction using processes with a dependency to high powers of the coupling constant. We obtain values of the strong coupling constant at the $Z$ mass compatible with the world average and with uncertainties commensurate with other NLO extractions at hadron colliders. Our most conservative result for the strong coupling constant is $\alpha_S=0.1178 ^{+0.0051}_{- 0.0043}$.

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Mark Johnson, Daniel Maître. 2017-11-04. Strong coupling constant extraction from high-multiplicity Z+jets observables. https://doi.org/10.1103/physrevd.97.054013

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