Measurement of alpha(s) using NLLA + O (alpha-s**2) in e+ e- annihilation at s**(1/2) = 58-GeV - INSPIRE

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Measurement of alpha(s) using NLLA + O (alpha-s2) in e+ e- annihilation at s(1/2) = 58-GeV

AMY

Collaboration

•

D.Y. Kim
(
- Korea U.
)

Aug, 1997

8 pages

Published in:

Phys.Lett.B 420 (1998) 233-240

DOI:

10.1016/S0370-2693(97)01571-2

Experiments:

KEK-TE-003

View in:

ADS Abstract Service

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Abstract: (Elsevier)

A measurement of the strong coupling constant α S is presented using hadronic events produced in e + e − annihilations at s =58.0 GeV from the AMY detector at TRISTAN. The measurement is based on comparisons of the distributions of thrust, heavy jet mass, total jet broadening, wide jet broadening, and energy-energy correlations with QCD calculations resummed up to next-to-leading-logarithms matched with the O ( α S 2 ) perturbative calculation. Combining the results of the individual evaluations, we find α S (58 GeV )=0.132±0.006 .

electron positron: colliding beams
electron positron: annihilation
strong interaction: coupling constant
jet: thrust
jet: mass
energy: correlation
differential cross section
quantum chromodynamics: perturbation theory
leading logarithm approximation
experimental results

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Figures(0)

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