Achard, P. ; Adriani, O. ; Aguilar-Benite, M. ; Gurtu, A. ; et., al (2002) Determination of as from hadronic event shapes in e+e- annihilation at 192 ≤ √s ≤ 208 GeV Physics Letters B, 536 (3-4). pp. 217-228. ISSN 0370-2693
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0370-2693(02)01814-2
Abstract
Results are presented from a study of the structure of high energy hadronic events recorded by the L3 detector at √s≥192 GeV. The distributions of several event shape variables are compared to resummed σ(αs2) QCD calculations. We determine the strong coupling constant at three average centre-of-mass energies: 194.4, 200.2 and 206.2 GeV. These measurements, combined with previous L3 measurements at lower energies, demonstrate the running of αs as expected in QCD and yield αs(mZ)=0.1227±0.0012±0.0058, where the first uncertainty is experimental and the second is theoretical.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 84628 |
| Deposited On: | 27 Feb 2012 03:43 |
| Last Modified: | 27 Feb 2012 03:43 |
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