Results on {alpha}{sub s} and QCD from (and above) the Z{sup 0}

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In electron-positron annihilation hadronic activity is, by construction, limited to the final state, making the study of hadronic events cleaner and simpler relative to lepton-hadron and hadron-hadron collisions, from both the experimental and theoretical points-of-view. To be specific, samples of hadronic events can be selected by experiments at the Z{sup 0} resonance with efficiency and purity of better than 99%. Jet and event-shape observables have been calculated at next-to-leading order, O({alpha}{sub s}{sup 2}), and some inclusive observables have been calculated at O({alpha}{sub s}{sup 3}). Non-perturbative calculations, in the form of power corrections to perturbatively-evaluated observables, have been performed, and there ... continued below

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28 p.

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Burrows, P.N. September 1, 1997.

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  • Burrows, P.N. Stanford Univ., CA (United States). Stanford Linear Accelerator Center

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In electron-positron annihilation hadronic activity is, by construction, limited to the final state, making the study of hadronic events cleaner and simpler relative to lepton-hadron and hadron-hadron collisions, from both the experimental and theoretical points-of-view. To be specific, samples of hadronic events can be selected by experiments at the Z{sup 0} resonance with efficiency and purity of better than 99%. Jet and event-shape observables have been calculated at next-to-leading order, O({alpha}{sub s}{sup 2}), and some inclusive observables have been calculated at O({alpha}{sub s}{sup 3}). Non-perturbative calculations, in the form of power corrections to perturbatively-evaluated observables, have been performed, and there are well-understood models of hadronization that have been carefully tuned to the data collected over the past 20 years. Electron-positron annihilation thus provides an ideal environment for precise tests of QCD, and has yielded spectacular results. Here, measurements of {alpha}{sub s} from e{sup +}e{sup {minus}} annihilation experiments are reviewed and compared with measurements from other processes. Highlights are presented of recent QCD studies in e{sup +}e{sup {minus}} annihilation at the Z{sup 0} resonance.

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28 p.

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INIS; OSTI as DE98001638

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  • 17. international conference on physics in collisions (PIC 97), Bristol (United Kingdom), 25-27 Jun 1997

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  • Other: DE98001638
  • Report No.: SLAC-PUB--7631
  • Report No.: MIT-LNS--97-272;CONF-9706196--
  • Grant Number: FC02-94ER40818;AC03-76SF00515
  • DOI: 10.2172/16811 | External Link
  • Office of Scientific & Technical Information Report Number: 555581
  • Archival Resource Key: ark:/67531/metadc697068

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  • September 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 9, 2016, 11:54 a.m.

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Burrows, P.N. Results on {alpha}{sub s} and QCD from (and above) the Z{sup 0}, article, September 1, 1997; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc697068/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.