$B$ meson anomalies and large $B^{+}\to K^{+}\nu \bar{\nu }$ in non-universal $U(1{)}^{\prime }$ models

Peter Athron, R. Martinez, Cristian Sierra

In view of both the latest LHCb measurement of $R_{K^{(\ast )}}$ and the new $2.8\sigma$ deviation reported by Belle II on $B^{+}\to K^{+}\nu \bar{\nu }$ decays, we present a fit to the $B$ meson a…