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Durham University

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Publication details for Daniel Maitre

Johnson, Mark & Maître, Daniel (2018). Strong coupling constant extraction from high-multiplicity Z + jets observables. Physical Review D 97(5): 054013.

Author(s) from Durham

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 on 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 next-to-leading order extractions at hadron colliders. Our most conservative result for the strong coupling constant is
α
S
(
M
Z
)
=
0.117
8
+
0.0051

0.0043
.