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Over the last few years LHCb with present energies found some discrepanciesin $b\to s\ell^+\ell^-$ FCNC transitions including anomalies in the angularobservables of $B\to K^*\mu^+\mu^-$, particularly in $P_5^\prime$, in lowdimuon mass region. Recently, these anomalies are confirmed by Belle, CMS andATLAS. As the direct evidence of physics beyond-the-SM is absent so far,therefore, these anomalies are being interpreted as indirect hint of newphysics. In this context, we study the implication of non universal family of$Z^\prime$ model to the angular observables $P_{1,2,3}$, $P^{\prime}_{4,5,6}$and newly proposed lepton flavor universality violation observables, $Q_{4,5}$,in $B\to K^*(\to K\pi)\mu^+ \mu^-$ decay channel in the low dimuon mass region.To see variation in the values of these observables from their standard modelvalues, we have chosen the different scenarios of the $Z^\prime$ model. It isfound that these angular observables are sensitive to the values of theparameters of $Z^\prime$ model. We have also found that with the presentparametric space of $Z^\prime$ model, the $P_5^\prime$-anomaly could beaccommodated. However, more statistics on the anomalies in the angularobservables are helpful to reveal the status of the considered model and, ingeneral, the nature of new physics.

LHCb anomaly in $\boldsymbol{B\to K^*\mu^+ \mu^-}$ optimised observables and potential of $\boldsymbol{Z^\prime}$ Model