Measurements of $B^0\to J\mathrm{/}\psi {\pi }^0$ and other CP violating modes at Belle

We report the recent measurements of $B^0\to J\mathrm{/}\psi {\pi }^0$ and other CP violation modes based on the data collected by the Belle experiment at the KEKB collider. The CP asymmetry parameters for the decay $B^0\to J\mathrm{/}\psi {\pi }^0$ have previously been measured by BaBar and Belle experiments, but the results of mixing induced CP asymmetry $[S=-{\eta }_f\sin (2{\varphi }_1)]$ were not in good agreement with each other. Furthermore, the BaBar result lies outside the physically allowed region. Previous Belle measurements were based on $535\times {10}^6$ $B\bar{B}$ pairs. We updated the measurements using the final Belle data set of $772\times {10}^6$ $B\bar{B}$ pairs. The CP asymmetry parameters from a charmless $B^0\to K_S^0{\pi }^0{\pi }^0$ decay using final Belle data set and measurement of $\cos (2{\varphi }_1)$ in $B^0\to D^{(\ast )}{h}^0$ using joint BaBar and Belle analysis are also discussed.