Determination of the Strong Coupling Constant and Multijet Cross Section Ratio Measurements

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Concepts and results of determinations of the strong coupling in hadron collisions are discussed. A recent {alpha}{sub s} result from the inclusive jet cross section in p{bar p} collisions at {radical}s = 1.96 TeV is presented which is based on perturbative QCD calculations beyond next-to-leading order. Emphasis is put on the consistency of the conceptual approach. Conceptual limitations in the approach of extracting as from cross section data are discussed and how these can be avoided by using observables that are defined as ratios of cross sections. For one such observable, the multijet cross section ratio R{sub 3/2}, preliminary results ... continued below

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4 pages

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Wobisch, M. June 1, 2011.

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Concepts and results of determinations of the strong coupling in hadron collisions are discussed. A recent {alpha}{sub s} result from the inclusive jet cross section in p{bar p} collisions at {radical}s = 1.96 TeV is presented which is based on perturbative QCD calculations beyond next-to-leading order. Emphasis is put on the consistency of the conceptual approach. Conceptual limitations in the approach of extracting as from cross section data are discussed and how these can be avoided by using observables that are defined as ratios of cross sections. For one such observable, the multijet cross section ratio R{sub 3/2}, preliminary results are presented.

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4 pages

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  • Report No.: FERMILAB-CONF-11-285-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 1023977
  • Archival Resource Key: ark:/67531/metadc835272

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Office of Scientific & Technical Information Technical Reports

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  • June 1, 2011

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Aug. 26, 2016, 4:18 p.m.

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Wobisch, M. Determination of the Strong Coupling Constant and Multijet Cross Section Ratio Measurements, article, June 1, 2011; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc835272/: accessed May 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.