Abstract
Hadronic Z decays into three jets are used to test QCD models of colour reconnection (CR). A sensitive quantity is the rate of gluon jets with a gap in the particle rapidity distribution and zero jet charge. Gluon jets are identified by either energy-ordering or by tagging two b-jets. The rates predicted by two string-based tunable CR models, one implemented in JETSET (the GAL model), the other in ARIADNE, are too high and disfavoured by the data, whereas the rates from the corresponding non-CR standard versions of these generators are too low. The data can be described by the GAL model assuming a small value for the R(0) parameter in the range 0.01-0.02.
Lingua originale | English |
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pagine (da-a) | 685-698 |
Numero di pagine | 14 |
Rivista | THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS |
Volume | 48 |
Stato di pubblicazione | Published - 2006 |
All Science Journal Classification (ASJC) codes
- ???subjectarea.asjc.2200.2201???
- ???subjectarea.asjc.3100.3101???