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

Johnson, Mark; Maître, Daniel

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 .

Citation

Johnson, M., & Maître, D. (2018). Strong coupling constant extraction from high-multiplicity Z + jets observables. Physical Review D, 97(5), Article 054013. https://doi.org/10.1103/physrevd.97.054013

• Journal Article Type: Article
• Acceptance Date: Dec 18, 2017
• Online Publication Date: Mar 15, 2018
• Publication Date: Mar 15, 2018
• Deposit Date: Apr 4, 2018
• Publicly Available Date: Apr 5, 2018
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 97
• Issue: 5
• Article Number: 054013
• DOI: https://doi.org/10.1103/physrevd.97.054013
• Public URL: https://durham-repository.worktribe.com/output/1330926