DOI: 10.1140/epjc/s2002-01121-3
Charged particle momentum spectra
in
e+e- annihilation at
-
209 GeV
The OPAL Collaboration (Received: 17 July 2002 / Published online: 3 March 2003 )
Abstract
Charged particle momentum distributions are studied in the reaction
hadrons, using data collected with the OPAL detector
at centre-of-mass energies from 192 GeV to 209 GeV. The data correspond to
an average centre-of-mass energy of 201.7 GeV and a total integrated
luminosity of 433
pb-1. The measured distributions and derived
quantities, in combination with corresponding results obtained at lower
centre-of-mass energies, are compared to QCD predictions in various
theoretical approaches to study the energy dependence of the strong
interaction and to test QCD as the theory describing it. In general, a
good agreement is found between the measurements and the corresponding
QCD predictions.
© Società Italiana di Fisica, Springer-Verlag 2003
