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Determination of alpha_s(M_Z^2) from hadronic event shape observables in e+e- annihilation

P. N. Burrows
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Abstract

The determination of alpha_s(M_Z^2) using O(alpha_s^2) calculations of hadronic event observables in e+e- annihilation is reviewed. The large scatter among alpha_s(M_Z^2) values determined from different observables may be interpreted as arising from the effect of uncalculated higher-order contributions. The application of `optimised' perturbation theory and Pade approximants in an attempt to reduce this effect is discussed.

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P. N. Burrows. 1996-12-11. Determination of alpha_s(M_Z^2) from hadronic event shape observables in e+e- annihilation. https://arxiv.org/abs/hep-ex/9612008

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