Measurement of event shape distributions and moments in e⁺e⁻ → hadrons at 91-209 GeV and a determination of alpha s

G Abbiendi; Georgios Anagnostou; Paul Bell; David Charlton; Christopher Hawkes; Predrag Jovanovic; Stephen O'Neale; Miriam Watson; Peter Watkins; Alan Watson; Nigel Watson; John Wilson

doi:10.1140/epjc/s2005-02120-6

Measurement of event shape distributions and moments in e⁺e⁻ → hadrons at 91-209 GeV and a determination of alpha s

G Abbiendi, Georgios Anagnostou, Paul Bell, David Charlton, Christopher Hawkes, Predrag Jovanovic, Stephen O'Neale, Miriam Watson, Peter Watkins, Alan Watson, Nigel Watson, John Wilson

Physics and Astronomy

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Abstract

We have studied hadronic events from e(+)e(-) annihilation data at centre-of-mass energies from 91 to 209 GeV. We present distributions of event shape observables and their moments at each energy and compare with QCD Monte Carlo models. From the event shape distributions we extract the strong coupling alpha(s) and test its evolution with energy scale. The results are consistent with the running of alpha(s) expected from QCD. Combining all data, the value of alpha(s)(M-Z) is determined to be alpha(s)(M-Z) = 0.1191 +/- 0.0005 (stat.) +/- 0.0010 (expt.) +/- 0.0011 (hadr.) +/- 0.0044 (theo.). The energy evolution of the moments is also used to determine a value of alpha(s) with slightly larger errors: alpha(s)(M-Z) = 0.1223 +/- 0.0005 (stat.) +/- 0.0014 (expt.) +/- 0.0016 (hadr.)(-0.0036)(+0.0054) (theo.).

Original language	English
Pages (from-to)	287-316
Number of pages	30
Journal	European Physical Journal C
Volume	40
DOIs	https://doi.org/10.1140/epjc/s2005-02120-6
Publication status	Published - 1 Apr 2005

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Abbiendi, G., Anagnostou, G., Bell, P., Charlton, D., Hawkes, C., Jovanovic, P., O'Neale, S., Watson, M., Watkins, P., Watson, A., Watson, N., & Wilson, J. (2005). Measurement of event shape distributions and moments in e⁺e⁻ → hadrons at 91-209 GeV and a determination of alpha s. European Physical Journal C, 40, 287-316. https://doi.org/10.1140/epjc/s2005-02120-6

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title = "Measurement of event shape distributions and moments in e⁺e⁻ → hadrons at 91-209 GeV and a determination of alpha s",

abstract = "We have studied hadronic events from e(+)e(-) annihilation data at centre-of-mass energies from 91 to 209 GeV. We present distributions of event shape observables and their moments at each energy and compare with QCD Monte Carlo models. From the event shape distributions we extract the strong coupling alpha(s) and test its evolution with energy scale. The results are consistent with the running of alpha(s) expected from QCD. Combining all data, the value of alpha(s)(M-Z) is determined to be alpha(s)(M-Z) = 0.1191 +/- 0.0005 (stat.) +/- 0.0010 (expt.) +/- 0.0011 (hadr.) +/- 0.0044 (theo.). The energy evolution of the moments is also used to determine a value of alpha(s) with slightly larger errors: alpha(s)(M-Z) = 0.1223 +/- 0.0005 (stat.) +/- 0.0014 (expt.) +/- 0.0016 (hadr.)(-0.0036)(+0.0054) (theo.).",

author = "G Abbiendi and Georgios Anagnostou and Paul Bell and David Charlton and Christopher Hawkes and Predrag Jovanovic and Stephen O'Neale and Miriam Watson and Peter Watkins and Alan Watson and Nigel Watson and John Wilson",

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T1 - Measurement of event shape distributions and moments in e⁺e⁻ → hadrons at 91-209 GeV and a determination of alpha s

AU - Abbiendi, G

AU - Anagnostou, Georgios

AU - Bell, Paul

AU - Charlton, David

AU - Hawkes, Christopher

AU - Jovanovic, Predrag

AU - O'Neale, Stephen

AU - Watson, Miriam

AU - Watkins, Peter

AU - Watson, Alan

AU - Watson, Nigel

AU - Wilson, John

PY - 2005/4/1

Y1 - 2005/4/1

N2 - We have studied hadronic events from e(+)e(-) annihilation data at centre-of-mass energies from 91 to 209 GeV. We present distributions of event shape observables and their moments at each energy and compare with QCD Monte Carlo models. From the event shape distributions we extract the strong coupling alpha(s) and test its evolution with energy scale. The results are consistent with the running of alpha(s) expected from QCD. Combining all data, the value of alpha(s)(M-Z) is determined to be alpha(s)(M-Z) = 0.1191 +/- 0.0005 (stat.) +/- 0.0010 (expt.) +/- 0.0011 (hadr.) +/- 0.0044 (theo.). The energy evolution of the moments is also used to determine a value of alpha(s) with slightly larger errors: alpha(s)(M-Z) = 0.1223 +/- 0.0005 (stat.) +/- 0.0014 (expt.) +/- 0.0016 (hadr.)(-0.0036)(+0.0054) (theo.).

AB - We have studied hadronic events from e(+)e(-) annihilation data at centre-of-mass energies from 91 to 209 GeV. We present distributions of event shape observables and their moments at each energy and compare with QCD Monte Carlo models. From the event shape distributions we extract the strong coupling alpha(s) and test its evolution with energy scale. The results are consistent with the running of alpha(s) expected from QCD. Combining all data, the value of alpha(s)(M-Z) is determined to be alpha(s)(M-Z) = 0.1191 +/- 0.0005 (stat.) +/- 0.0010 (expt.) +/- 0.0011 (hadr.) +/- 0.0044 (theo.). The energy evolution of the moments is also used to determine a value of alpha(s) with slightly larger errors: alpha(s)(M-Z) = 0.1223 +/- 0.0005 (stat.) +/- 0.0014 (expt.) +/- 0.0016 (hadr.)(-0.0036)(+0.0054) (theo.).

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U2 - 10.1140/epjc/s2005-02120-6

DO - 10.1140/epjc/s2005-02120-6

M3 - Article

VL - 40

SP - 287

EP - 316

JO - European Physical Journal C

JF - European Physical Journal C

ER -

Measurement of event shape distributions and moments in e⁺e⁻ → hadrons at 91-209 GeV and a determination of alpha s

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