Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at s=13TeV

CMS Collaboration cms-publication-committee-chair@cern.ch

doi:10.1140/epjc/s10052-024-13116-7

Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at s=13TeV

CMS Collaboration [email protected]

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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 p_T. This observable is measured in multijet events over the range of p_T=360–3170GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13TeV, 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 α_S(m_Z)=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 α_S in the TeV region shows no deviation from the expected NLO pQCD behaviour.

Original language	English
Article number	842
Journal	European Physical Journal C
Volume	84
Issue number	8
DOIs	https://doi.org/10.1140/epjc/s10052-024-13116-7
Publication status	Published - Aug 2024
Externally published	Yes

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10.1140/epjc/s10052-024-13116-7

Cite this

@article{3016b57909ba4633b5ae7917e4917d33,

title = "Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at s=13TeV",

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=360–3170GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13TeV, 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 αS(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 αS in the TeV region shows no deviation from the expected NLO pQCD behaviour.",

author = "\{CMS Collaboration [email protected]\} and A. Hayrapetyan and A. Tumasyan and W. Adam and Andrejkovic, \{J. W.\} and T. Bergauer and S. Chatterjee and K. Damanakis and M. Dragicevic and Hussain, \{P. S.\} and M. Jeitler and N. Krammer and A. Li and D. Liko and I. Mikulec and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and M. Sonawane and S. Templ and W. Waltenberger and Wulz, \{C. E.\} and Darwish, \{M. R.\} and T. Janssen and \{Van Mechelen\}, P. and Bols, \{E. S.\} and J. D{\textquoteright}Hondt and S. Dansana and \{De Moor\}, A. and M. Delcourt and \{El Faham\}, H. and S. Lowette and I. Makarenko and D. M{\"u}ller and Sahasransu, \{A. R.\} and S. Tavernier and M. Tytgat and \{Van Onsem\}, \{G. P.\} and \{Van Putte\}, S. and D. Vannerom and B. Clerbaux and Das, \{A. K.\} and \{De Lentdecker\}, G. and L. Favart and D. Hohov and J. Jaramillo and A. Khalilzadeh and K. Lee and M. Mahdavikhorrami and A. Malara and S. Paredes",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = aug,

doi = "10.1140/epjc/s10052-024-13116-7",

language = "English",

volume = "84",

journal = "European Physical Journal C",

issn = "1434-6044",

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T1 - Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at s=13TeV

AU - CMS Collaboration [email protected]

AU - Hayrapetyan, A.

AU - Tumasyan, A.

AU - Adam, W.

AU - Andrejkovic, J. W.

AU - Bergauer, T.

AU - Chatterjee, S.

AU - Damanakis, K.

AU - Dragicevic, M.

AU - Hussain, P. S.

AU - Jeitler, M.

AU - Krammer, N.

AU - Li, A.

AU - Liko, D.

AU - Mikulec, I.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Schwarz, D.

AU - Sonawane, M.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Darwish, M. R.

AU - Janssen, T.

AU - Van Mechelen, P.

AU - Bols, E. S.

AU - D’Hondt, J.

AU - Dansana, S.

AU - De Moor, A.

AU - Delcourt, M.

AU - El Faham, H.

AU - Lowette, S.

AU - Makarenko, I.

AU - Müller, D.

AU - Sahasransu, A. R.

AU - Tavernier, S.

AU - Tytgat, M.

AU - Van Onsem, G. P.

AU - Van Putte, S.

AU - Vannerom, D.

AU - Clerbaux, B.

AU - Das, A. K.

AU - De Lentdecker, G.

AU - Favart, L.

AU - Hohov, D.

AU - Jaramillo, J.

AU - Khalilzadeh, A.

AU - Lee, K.

AU - Mahdavikhorrami, M.

AU - Malara, A.

AU - Paredes, S.

PY - 2024/8

Y1 - 2024/8

N2 - 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=360–3170GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13TeV, 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 αS(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 αS in the TeV region shows no deviation from the expected NLO pQCD behaviour.

AB - 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=360–3170GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13TeV, 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 αS(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 αS in the TeV region shows no deviation from the expected NLO pQCD behaviour.

UR - https://www.scopus.com/pages/publications/85201829376

U2 - 10.1140/epjc/s10052-024-13116-7

DO - 10.1140/epjc/s10052-024-13116-7

M3 - Article

AN - SCOPUS:85201829376

SN - 1434-6044

VL - 84

JO - European Physical Journal C

JF - European Physical Journal C

IS - 8

M1 - 842

ER -

Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at s=13TeV

Abstract

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