Measurement of the Strong Coupling alpha s from Four-Jet Observables in e+e- Annihilation
arXiv:hep-ex/0601048 · doi:10.1140/epjc/s2006-02581-y
Abstract
Data from e+e- annihilation into hadrons at centre-of-mass energies between 91 GeV and 209 GeV collected with the OPAL detector at LEP, are used to study the four-jet rate as a function of the Durham algorithm resolution parameter ycut. The four-jet rate is compared to next-to-leading order calculations that include the resummation of large logarithms. The strong coupling measured from the four-jet rate is alphas(Mz0)= 0.1182+-0.0003(stat.)+-0.0015(exp.)+-0.0011(had.)+-0.0012(scale)+-0.0013(mass) in agreement with the world average. Next-to-leading order fits to the D-parameter and thrust minor event-shape observables are also performed for the first time. We find consistent results, but with significantly larger theoretical uncertainties.
25 pages, 15 figures, Submitted to Euro. Phys. J. C
References in corpus (16)
- Next-to-leading order calculation of four-jet observables in electron-positron annihilation
- grc4f v1.0: a Four-fermion Event Generator for e+e- Collisions
- grc4f v1.1: a Four-fermion Event Generator for e+e- Collisions
- Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion-Pair Production at 189-209 GeV at LEP
- Measurement of event shape distributions and moments in e+e- -> hadrons at 91-209 GeV and a determination of alpha_s
- Monte Carlo Program KoralW 1.42 for All Four-Fermion Final States in e+e- Collisions
- Complete Order alpha_s^3 Results for e^+ e^- to (gamma,Z) to Four Jets
- Coherent Exclusive Exponentiation CEEX: the Case of the Resonant e+ e- Collision
- at Zinnowitz 2004
- Next-to-Leading Order Calculation of Four-Jet Shape Variables
- A Simultaneous Measurement of the QCD Colour Factors and the Strong Coupling
- Consistent Measurements of alpha_s from Precise Oriented Event Shape Distributions
- W+W- production and triple gauge boson couplings at LEP energies up to 183 GeV
- Tests of model of color reconnection and a search for glueballs using gluon jets with a rapidity gap
- Measurement of the energy dependence of hadronic jet rates and the strong coupling alpha_s from the four-jet rate with the DELPHI detector at LEP
- Multijet rates in e+e- annihilation: perturbation theory versus LEP data
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- Measurement of Inclusive Jet Production in Deep-Inelastic Scattering at High Q^2 and Determination of the Strong Coupling
- Determination of αS using OPAL hadronic event shapes at sqrt(s) = 91 - 209 GeV and resummed NNLO calculations
- Measurement of the strong coupling alpha_S from the three-jet rate in e+e- - annihilation using JADE data
- α_S from LEP
- Measurements of inclusive jet and dijet cross sections at the Large Hadron Collider