Search for rare B${}^0$ $\to$ (${\pi }^0$, $\eta$, ${\eta }^{\prime }$) l${}^{+}$l${}^{-}$ decays at Belle

The decay B${}^0$ $\to$ (${\pi }^0$, $\eta$, ${\eta }^{\prime }$) l${}^{+}$l${}^{-}$, (l=e,$\mu$) proceeds through the flavor changing neutral current (FCNC) b $\to$ d l${}^{+}$l${}^{-}$. In the Standard Model (SM), these decays are forbidden at tree level and can only occur in higher orders. Therefore the predicted branching fractions in the SM are of the order of 10${}^{-8}$. The b $\to$ d l${}^{+}$l${}^{-}$ transition provides a promising avenue to search for New Physics (NP). Amplitudes from these NP contributions can interfere with those from the SM, and significantly enhance the branching fractions from the SM predictions. I will present a search for rare neutral current decays B${}^0$ $\to$ (${\pi }^0$, $\eta$, ${\eta }^{\prime }$) l${}^{+}$l${}^{-}$, using a sample of 772 $\times$ 10${}^6$ $B\overline{B}$ pairs collected with the Belle detector at the $e^{+}{e}^{-}$ asymmetric collider KEKB.