INDICATIONS FOR AN ANOMALOUS RIGHT-HANDED COUPLING OF THE b-QUARK FROM A MODEL INDEPENDENT ANALYSIS OF LEP AND SLD DATA ON Z DECAYS
نویسنده
چکیده
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. PACS 13.10.+q, 13.15.Jr, 13.38.+c, 14.80.Er, 14.80.Gt
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تاریخ انتشار 1998