Study of hadronic event shape in flavour tagged events in e+e-annihilation at s = 197 GeV

Details Study of hadronic event shape in flavour tagged events in e+e-annihilation at s = 197 GeV Study of hadronic event shape in flavour tagged events in e+e-annihilation at s = 197 GeV

2009-07-15

arxiv.org/abs/0907.2658v1

PMC Phys.A2:6,2008

Physics

High Energy Physics

High Energy Physics - Experiment

29 pages, 9 figures

Scientific paper

10.1186/1754-0410-2-6

Results are presented from a study of the structure of hadronic events in high-energy e+e- interactions detected by the L3 detector at LEP. Various event shape distributions and their moments are measured at several energy points at and above the Z-boson mass. The event flavour is tagged by using the decay characteristics of b-hadrons. Measurements of distributions of event shape variables for all hadronic events, for light (u, d, s, c) and heavy (b) quark flavours are compared to several QCD models with improved leading log approximation: JETSET, HERWIG and ARIADNE. A good description of the data is provided by the models.

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