Determination of α s in first and second order QCD frome + e − annihilation into hadrons
Althoff, M. ; Braunschweig, W. ; Kirschfink, F. J. ; Lübelsmeyer, K. ; Martyn, H. -U. ; Rosskamp, P. ; Sander, H. G. ; Schmitz, D. ; Siebke, H. ; Wallraff, W. ; Eisenmann, J. ; Fischer, H. M. ; Hartmann, H. ; Jocksch, A. ; Knop, G. ; Köpke, L. ; Kolanoski, H. ; Kück, H. ; Mertens, V. ; Wedemeyer, R. ; Eskreys, A. ; Gather, K. ; Hultschig, H. ; Joos, P. ; Kötz, U.
Springer
Published 1984
Springer
Published 1984
| ISSN: |
1434-6052
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract Multihadron events produced bye + e − annihilation at a c.m. energy of 34.6 GeV have been used to determine α s . The predictions of 1 st and 2nd order QCD models with independent jet and string fragmentation have been compared to a large variety of kinematic variables such as event shapes, transverse momentum spectra, jet masses, 3-cluster thrust and the asymmetry of energy-energy correlations. The value of α s has been found to depend on the variables used, on the fragmentation model and on the treatment of soft gluons in the 2nd order QCD calculation. Within the models considered α s has been found in complete 2nd order QCD to lie between 0.12 and 0.23.
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| Type of Medium: |
Electronic Resource
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| URL: |