Measurement of heavy quark forward backward asymmetries and average B mixing using leptons in hadronic Z decays

Hadronic Z0 decays with identified electrons or muons have been used to measure the forward-backward asymmetries of e^+e^- --> Z0 --> bbbar and e^+e^- --> Z0 --> ccbar events. The asymmetries at three centre-of-mass energies, and the average B mixing parameter, chi, are determined in a simultaneous fit to events with one or two lepton candidates.

Note:

23 pages, 3 figures, Submitted to Phys. Lett. B Report-no: CERN-EP/2003-039

electron positron: colliding beams
electron positron: annihilation
Z0: electroproduction
Z0: hadronic decay
charm
bottom
quark: pair production
quark: semileptonic decay
angular distribution: asymmetry
lepton: final state

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