Test of Colour Reconnection Models using Three-Jet Events in Hadronic Z Decays
(2006) European Physical Journal C. Particles and Fields — Vol. C48, p. 685-698 (2006)
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- et. al.
- Abstract
- (en) 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. Comment: 21 pages, 11 figures
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Schael, S., Delaere, C., & et al. (2006). Test of Colour Reconnection Models using Three-Jet Events in Hadronic Z Decays. European Physical Journal C. Particles and Fields, C48, 685-698. https://doi.org/10.1140/epjc/s10052-006-0017-5 (Original work published 2006)