Studies of Hadronic Event Structure in e+e- Annihilation from 30 GeV to 209 GeV with the L3 Detector

L3 COLLABORATION; P. ACHARD , M.T.DOVA ET AL

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS

ELSEVIER

Año: 2004 vol. 399 p. 71 - 174

0370-1573

In this Report, QCD results obtained from a study of hadronic event structure in high energy e^+e^- interactions with the L3 detector are presented. The operation of the LEP collider at many different collision energies from 91 GeV to 209 GeV offers a unique opportunity to test QCD by measuring the energy dependence of different observables. The main results concern the measurement of the strong coupling constant, alpha_s, from hadronic event shapes and the study of effects of soft gluon coherence through charged particle multiplicity and momentum distributions.