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Measurement of the forward-backward asymmetry in Z-bb and Z-cc

Research output: Contribution to journalJournal article


  • ALEPH Collaboration
<mark>Journal publication date</mark>1991
<mark>Journal</mark>Physics Letters B
Issue number2
Number of pages12
Pages (from-to)325-336
<mark>Original language</mark>English


From a sample of 150 000 hadronic Z decays collected with the ALEPH detector at LEP, events containing prompt leptons are used to measure the forward-backward asymmetries for the channels and , giving the results AFBb=0.126±0.028±0.012 and AFBc=0.064±0.039±0.030. These asymmetries correspond to the value of effective electroweak mixing angle at the Z mass sin2θW(mZ2) = 0.2262±0.0053.