Measurement of Heavy Quark Forward-Backward Asymmetries and Average B Mixing Using Leptons in Hadronic Z Decays

Abstract

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.

23 pages, 3 figures, Submitted to Phys. Lett. B

References in corpus (5)

• ZFITTER v.6.21 - A Semi-Analytical Program for Fermion Pair Production in e+e- Annihilation
• Corrections of Order α_s^2 to the Forward-Backward Asymmetry
• Measurement of Ab_FB using inclusive b-hadron decays
• Measurement of the b quark forward-backward asymmetry around the Z0 peak using an inclusive tag
• Measurement of the forward backward asymmetry of c and b quarks at the Z pole using reconstructed D mesons

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• A proposal on complementary determination of the electro-weak mixing angles $\mathrm{si}{\mathrm{n}}^2{\theta }_{\mathrm{W}}$ at a super Z-factory
• Constraining parameter space of the Little Higgs model by data of tera-Z factory and ILC
• Verifying the Resonance Schemes of Unstable Particles at Lepton Colliders