Abstract
A model-independent analysis is made using the LEP and SLD data on Z decays available at the end of 1996. The effective weak coupling constants of leptons, c quarks and b quarks are extracted. Except for the right-handed b-quark coupling, they all agree with the predictions of the standard electroweak model for mt=180 GeV and mH=100 GeV. The right-handed b-quark coupling is found to be 42% and 3.2 standard deviations above the standard model prediction.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have