Differential 3[three]-jet cross section in e- annihilation and comparison with 2- order predictions of QCD and Abelian vector theory PDF Download
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![Differential 3[three]-jet cross section in e- annihilation and comparison with 2- order predictions of QCD and Abelian vector theory PDF](https://books.google.com/books/content/images/frontcover/p5zTZwEACAAJ?fife=w80-h100)
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Author: JADE Collaboration
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Languages : en
Pages : 8
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Author: JADE Collaboration
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Languages : en
Pages : 14
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Author: Deutsches Elektronen-Synchrotron (Hamburg)
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Author: B. Lampe
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Author: G. Krämer
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Languages : en
Pages : 21
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Author: G. Kramer
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Languages : de
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Languages : en
Pages : 93
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Languages : en
Pages : 223
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This paper presents a measurement of the inclusive 3-jet production differential cross section at a proton-proton centre-of-mass energy of 7 TeV using data corresponding to an integrated luminosity of 5 fb$^{-1}$ collected with the CMS detector. The analysis is based on the three jets with the highest transverse momenta. The cross section is measured as a function of the invariant mass of the three jets in a range of 445-3270 GeV and in two bins of the maximum rapidity of the jets up to a value of 2. A comparison between the measurement and the prediction from perturbative QCD at next-to-leading order is performed. Within uncertainties, data and theory are in agreement. The sensitivity of the observable to parameters of the theory such as the parton distribution functions of the proton and the strong coupling constant $\alpha_S$ is studied. A fit to all data points with 3-jet masses larger than 664 GeV gives a value of the strong coupling constant of $\alpha_S(M_\mathrm{Z})$ = 0.1171 $\pm$ 0.0013 (exp) $^{+0.0073}_{-0.0047}$ (theo).
