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While it is known that third family hypercharge models can explain theneutral current $B-$anomalies, it was hitherto unclear whether the $Z-Z^\prime$mixing predicted by such models could simultaneously fit electroweak precisionobservables. Here, we perform global fits of several third family hyperchargemodels to a combination of electroweak data and those data pertinent to theneutral current $B-$anomalies. While the Standard Model is in tension with thiscombined data set with a $p-$value of $.00068$, simple versions of the models(fitting two additional parameters each) provide much improved fits. Theoriginal Third Family Hypercharge Model, for example, has a $p-$value of$.065$, i.e. $\sqrt{\Delta \chi^2}=6.5\sigma$.

Global Fits of Third Family Hypercharge Models to Neutral Current B-Anomalies and Electroweak Precision Observables