Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$
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· Eur.Phys.J.C
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A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum $$p_{\textrm{T}}$$. This observable is measured in multijet events over the range of $$p_{\textrm{T}} = 360$$–$$3170\,\text {Ge}\hspace{-.08em}\text {V} $$ based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13$$\,\text {Te}\hspace{-.08em}\text {V}$$, corresponding to an integrated luminosity of 134$$\,\text {fb}^{-1}$$. 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 $$\alpha _\textrm{S} (m_{{\textrm{Z}}}) =0.1177 \pm 0.0013\, \text {(exp)} _{-0.0073}^{+0.0116} \,\text {(theo)} = 0.1177_{-0.0074}^{+0.0117}$$, where the total uncertainty is dominated by the scale dependence of the fixed-order predictions. A test of the running of $$\alpha _\textrm{S}$$ in the $$\,\text {Te}\hspace{-.08em}\text {V}$$ region shows no deviation from the expected NLO pQCD behaviour.
- Research Organization:
- UC, Riverside; Florida U.; Istanbul U.; Warsaw U.; Ruhuna U.; Karamanoglu Mehmetbey U., Karaman; Naval Academy, Annapolis; Fudan U.; Pisa, Scuola Normale Superiore; Perugia U.; INFN, Florence; CHEP, Taegu; Stefan Meyer Inst. Subatomare Phys.; Vilnius U.; INFN, Rome; UCAS, Beijing; CINVESTAV, IPN; Panjab U.; Taiwan, Natl. Taiwan U.; Yildiz Tech. U.; Maryland U.; U. Campinas; INFN, Genoa; Brandenburg Tech. U.; Indian Inst. Tech., Madras; Colombo U.; Boston U.; Sofiya, Inst. Nucl. Res.; Annecy, LAPP; Chulalongkorn U.; Colorado U.; VINCA Inst. Nucl. Sci., Belgrade; Hefei, CUST; Eotvos U.; Bari U.; Kharkov, KIPT; Johns Hopkins U.; Cyprus U.; SYSU, Guangzhou; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Imperial Coll., London; Bangalore, Indian Inst. Sci.; Chonnam Natl. U.; ENEA, Bologna; Brunel U.; Sejong U.; LIP, Lisbon; Conacyt, Mexico; Cairo, Acad. Sci. Res. Tech.; Tarapaca U.; CERN; Oviedo U.; Adiyaman U.; Beijing, Inst. High Energy Phys.; Ain Shams U., Cairo; Puebla U., Inst. Fis.; IISER, Pune; Piemonte Orientale U., Alessandria; USTM, Behshahr; Frascati; Ecole Polytechnique; Rio de Janeiro State U.; Aachen, Tech. Hochsch.; Delhi U.; Northwestern U.; Taiwan, Natl. Central U.; San Francisco de Quito U.; Istanbul Tech. U.; Malaya U.; Cukurova U.; Brussels U.; Bhubaneswar, Inst. Phys.; UC, Davis; Bhubaneswar, NISER; Brown U.; Catania U.; INFN, Pavia; IRFU, Saclay; Northeastern U.; Hacettepe U.; Illinois U., Chicago; Rome U.; Andes U., Bogota; SSM, Naples; MIT; TU Vienna; Baylor U.; IPM, Tehran; Marmara U.; Kansas State U.; Southampton U.; Tashkent, IYF; Yerevan Phys. Inst.; Nebraska U.; Rutgers U., Piscataway; Vrije U., Brussels; Beihang U.; Notre Dame U.; Unlisted; Montenegro U.; Princeton U.; Tbilisi State U.; INFN, Turin; Sinop U.; Seoul U.; Bucharest, IFIN-HH; Vanderbilt U.; Gangneung-Wonju Natl. U.; Rutherford; UC, San Diego; Turin U.; Haute Alsace U.; Korea U.; Antwerp U.; Genoa U.; Ohio State U.; INFN, Milan Bicocca; TIFR, Mumbai, DHEP; Gent U.; Tsinghua U., Beijing; Florida Inst. Tech.; Budapest, RMKI; Indian Inst. Tech., Bhubaneswar; Yonsei U.; Tennessee U.; Democritos Nucl. Res. Ctr.; Sonora U.; ABC Federal U.; Monash U.; Rio de Janeiro, CBPF; Cornell U.; Nanjing Normal U.; Antioquia U.; Quaid-i-Azam U.; Virginia U.; NICPB, Tallinn; IAS, Julich; Kyung Hee U.; Bogazici U.; KIT, Karlsruhe, EKP; Kafkas U.; GTU, Tbilisi; Madrid, CIEMAT; Catholic U. America; Boskovic Inst., Zagreb; Carnegie Mellon U.; Ioannina U.; Erzincan U.; Iowa U.; British U. in Egypt; Iberoamericana U.; NCBJ, Swierk; Riga Tech. U.; U. Debrecen, Inst. Phys.; Rio Grande do Sul U.; Canterbury U.; Rockefeller U.; INFN, Bari; IP2I, Lyon; Wisconsin U., Madison; Zhejiang U.; AGH-UST, Cracow; Texas Tech.; Purdue U.; Lappeenranta U. Tech.; Cantabria Inst. of Phys.; Texas A-M; Milan Bicocca U.; Natl. Tech. U., Athens; Trento U.; UCLA; Split U.; Kansas U.; Mississippi U.; Minnesota U.; Split Tech. U.; Isfahan Tech. U.; Charles U.; INFN, Pisa; Alabama U.; Caltech; Belgrade U.; Higher Sch. of Economics, Moscow; Purdue U., Calumet; Pisa U.; INFN, Padua; Helsinki U.; Zurich U.; INFN, Bologna; UC, Santa Barbara; Bristol U.; EKU KRC, Gyongyos; Hanyang U.; Rice U.; Bethel Coll.; Middle East Tech. U., Ankara; Inst. Scintill. Mat., Kharkiv; INFN, Naples; Rochester U.; Guglielmo Marconi U.; Naples U.; Zurich, ETH; Sharif U. of Tech.; Saha Inst.; Tata Inst.; Hamburg U.; Sungkyunkwan U.; Louvain U.; Quito, Escuela Politecnica Natl.; Helwan U.; DESY; INFN, Perugia; INFN, Trieste; Sofiya U.; Debrecen, Inst. Nucl. Res.; Visva Bharati U.; Zewail City Sci. Technol., Giza; Strasbourg, IPHC; Florida State U.; Athens U.; Puerto Rico U., Mayaguez; Texas A&M U. Qatar, Doha; Bingöl U.; Helsinki Inst. of Phys.; PSI, Villigen; KIT, Karlsruhe, IKP; INFN, Catania; Florence U.; Trieste U.; Warsaw U. of Tech.; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); AUM, Kuwait; Wayne State U.; Seoul Natl. U.; Madrid, Autonoma U.; University Coll., Dublin; Peking U.; Vienna, OAW; Fayoum U.; SUNY, Buffalo
- Sponsoring Organization:
- US Department of Energy
- Grant/Contract Number:
- AC02-07CH11359; 89243024CSC000002
- OSTI ID:
- 2467549
- Report Number(s):
- CMS-SMP-22-005; CERN-EP-2024-066; FERMILAB-PUB-24-0650-CMS; oai:inspirehep.net:2780732; arXiv:2404.16082
- Journal Information:
- Eur.Phys.J.C, Journal Name: Eur.Phys.J.C Journal Issue: 8 Vol. 84
- Country of Publication:
- United States
- Language:
- English
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