Results on Α{sub S} and QCD from (and Above) the Z° PDF Download
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Languages : en
Pages : 28
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Author:
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Languages : en
Pages : 28
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Pages : 28
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Measurements of?{sub s} from ee− annihilation experiments are reviewed and compared with measurements from other processes. Highlights are presented of recent QCD studies in e+e− annihilation at the Z° resonance.
![Results On[alpha][sub S] and QCD from (and Above) the Z[sup 0]. PDF](https://books.google.com/books/content/images/frontcover/hVngjwEACAAJ?fife=w80-h100)
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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.
![Results on [alpha]{sub S} and QCD from (and Above) the Z° PDF](https://books.google.com/books/content/images/frontcover/8PRdAQAACAAJ?fife=w80-h100)
Author:
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Category :
Languages : en
Pages : 28
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Book Description
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° 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}2), and some inclusive observables have been calculated at O([alpha]{sub s}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 ee− annihilation experiments are reviewed and compared with measurements from other processes. Highlights are presented of recent QCD studies in ee− annihilation at the Z° resonance.
![Results On[alpha][sub S] and Tests of QCD From (and Above) the Z[sup 0]. PDF](https://books.google.com/books/content/images/frontcover/W3vGjwEACAAJ?fife=w80-h100)
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Languages : en
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Measurements of[alpha][sub s] from e[sup+]e[sup -] annihilation experiments are reviewed and compared with measurements from other processes. Highlights are presented of recent QCD studies in e[sup+]e[sup -] annihilation at the Z[sup 0] resonance.
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Category : Power resources
Languages : en
Pages : 806
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Category : Aeronautics
Languages : en
Pages : 704
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Category : Science
Languages : en
Pages : 1132
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Category : Power resources
Languages : en
Pages : 1144
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Category : Science
Languages : en
Pages : 872
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