Journal article

Heavy flavour production and decay with prompt leptons in the ALEPH detector

D Buskulic, D Casper, I De Bonis, D Decamp, P Ghez, C Goy, JP Lees, MN Minard, P Odier, B Pietrzyk, F Ariztizabal, P Comas, JM Crespo, I Efthymiopoulos, E Fernandez, M Fernandez-Bosman, V Gaitan, L Garrido, M Martinez, T Mattison Show all

Zeitschrift für Physik C Particles and Fields | Published : 1994

Abstract

In 431 000 hadronic Z decays recorded with the ALEPH detector at LEP, the yields of electrons and muons in events with one or more prompt leptons have been analysed to give information on the production and decay of heavy quarks. The fractions of {Mathematical expression} and {Mathematical expression} events are measured to be 0.219±0.006±0.005 and 0.165±0.005±0.020, and the corresponding forward-backward asymmetries at the Z mass are measured to be 0.090±0.013±0.003 and 0.111±0.021±0.018, after QED and QCD corrections. Measurements for the semileptonic branching ratios BR {Mathematical expression} and BR (b→cℓ+vX) yield 0.114±0.003±0.004 and 0.082±0.003±0.012, respectively. The dilepton eve..

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