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Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at $\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V}$

CMS Collaboration ; Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Li, A.; Liko, D.; Mikulec, I.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.; ... mehr

Abstract:

A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum pT . This observable is measured in multijet events over the range of pT=360–3170 GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 134 fb$^{−1}$ . The results are compared with predictions from
Monte Carlo parton-shower event generator simulations, as well as with fixed-order perturbative quantum chromodynamics (pQCD) predictions at next-to-leading-order (NLO)
accuracy obtained with different parton distribution functions (PDFs) and corrected for nonperturbative and electroweak effects. Data and theory agree within uncertainties.
From the comparison of the measured observable with the pQCD prediction obtained with the NNPDF3.1 NLO PDFs, the strong coupling at the Z boson mass scale is α$_S$(m$_Z$) =
0.1177 ± 0.0013 (exp)$\frac {+0.0116}{−0.0073}$ (theo) = 0.1177$\frac {+0.0117}{−0.0074}$ , where the total uncertainty is dominated by the scale dependence of the fixed-order predictions. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000174067
Veröffentlicht am 09.09.2024
Originalveröffentlichung
DOI: 10.1140/epjc/s10052-024-13116-7
Scopus
Zitationen: 2
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Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Scientific Computing Center (SCC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2024
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000174067
HGF-Programm 51.11.01 (POF IV, LK 01) Teilchenphysik
Erschienen in The European Physical Journal C
Verlag Springer-Verlag
Band 84
Heft 8
Seiten Art.-Nr.: 842
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 21.08.2024
Nachgewiesen in arXiv
Scopus
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