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Abstract: A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum. 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, corresponding to an integrated luminosity of 134fb-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, ?S(mZ)=0.1177±0.0013(exp)-0.0073 +0.0116(theo)=0.1177-0.0074 +0.0117, where the total uncertainty is dominated by the scale dependence of the fixed-order predictions. A test of the running of in the region shows no deviation from the expected NLO pQCD behaviour.
Fuente: European Physical Journal C, 2024, 84(8), 842
Publisher: Springer New York LLC
Publication date: 01/08/2024
No. of pages: 35
Publication type: Article
DOI: 10.1140/epjc/s10052-024-13116-7
ISSN: 1434-6044,1434-6052
Publication Url: https://doi.org/10.1140/epjc/s10052-024-13116-7
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HAYRAPETYAN, A.
SANDEEP BHOWMIK
SERGIO BLANCO FERNANDEZ
JAVIER ANDRES BROCHERO CIFUENTES
JOSE IBAN CABRILLO BARTOLOME
ALICIA CALDERON TAZON
JORGE DUARTE CAMPDERROS
MARCOS FERNANDEZ GARCIA
GERVASIO GOMEZ GRAMUGLIO
CLARA LASAOSA GARCIA
CELSO MARTINEZ RIVERO
PABLO MARTINEZ RUIZ DEL ARBOL
FRANCISCO MATORRAS WEINIG
PABLO MATORRAS CUEVAS
EFREN NAVARRETE RAMOS
JONATAN PIEDRA GOMEZ
LUCA SCODELLARO
IVAN VILA ALVAREZ
JESUS MANUEL VIZAN GARCIA
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