Measurement of thebb¯fraction in hadronicZdecays

Publisher Website

12 March 1990

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 64 (11) , 1211-1214
https://doi.org/10.1103/physrevlett.64.1211

Abstract

Using isolated leptons reconstructed in the Mark II detector to tag bb¯ events, we measure the fraction of bb¯ events in hadronic

Z^{0}

decays to be 0.

23_{- 0.09}^{+ 0.11}

, in good agreement with the standard-model prediction of 0.22. We find Γ(Z→bb¯)=0.

43_{- 0.17}^{+ 0.21}

GeV.

Keywords

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