A study of event shapes and determinations of using data of annihilations at to 44 GeV

Data recorded by the JADE experiment at the PETRA collider were used to measure the event shape observables thrust, heavy jet mass, wide and total jet broadening and the differential 2-jet rate in the Durham scheme. For the latter three observables, no experimental results have previously been prese...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 1998-02, Vol.1 (3), p.461-478
Main Authors: PA Movilla Fernández, Biebel, O, Bethke, S, Kluth, S, Pfeifenschneider, P
Format: Article
Language:English
Subjects:
Dependence
Quantum chromodynamics
Online Access:Get full text
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Summary:Data recorded by the JADE experiment at the PETRA collider were used to measure the event shape observables thrust, heavy jet mass, wide and total jet broadening and the differential 2-jet rate in the Durham scheme. For the latter three observables, no experimental results have previously been presented at these energies. The distributions were compared with resummed QCD calulations (+NLLA), and the strong coupling constant was determined at different energy scales . The results, are in agreement with previous combined results of PETRA albeit with smaller uncertainties. Together with corresponding data from LEP, the energy dependence of is significantly tested and is found to be in good agreement with the QCD expectation. Similarly, mean values of the observables were compared to analytic QCD predictions where hadronisation effects are absorbed in calculable power corrections.
ISSN:1434-6044
1434-6052
DOI:10.1007/s100520050096