Kavita Lalwani for the Belle Collaboration

The Belle experiment, the first generation B factory using $e^+e^-$ asymmetric collider at the KEKB in KEK Japan, has collected a total data sample of 710 fb$^{-1}$ at the center of mass energy of the $\Upsilon(4S)$. Belle has played a leading role in the charmonium spectroscopy by finding many new charmonium(-like) states. In this talk, new measurement results on the angular analysis of $e^+e^- \rightarrow D^{\ast +} D^{\ast -}$ process near the open charm threshold will be presented. The recent results on the observation of new charmonium like-state produced in $e^+e^-\rightarrow J/\psi D\bar{D}$ will also be discussed. In addition, the results on the first observation of the $\Xi_{c} (2930)^{0}$ charmed-strange baryon will be presented, where $\Xi_{c} (2930)^{0}$ is found in its decay to $K^{-} \Lambda_{c}^{+}$ in $B^{-} \rightarrow K^{-} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}$ decays. Further, analysis efforts for the precision measurement of the branching ratio of $B^{-} \rightarrow K^{-} \Lambda^{+}_c\bar{\Lambda}^{-}_c$ and to search for the charmonium-like state $Y(4660)$ and its spin partner $Y_n$ in the invariant mass spectrum of $\Lambda^{+}_c \bar{\Lambda}^{-}_c$ will also be discussed. The measurement results of the absolute branching fractions of $B^{+}\rightarrow X_c{\bar{c}} K^{+}$ and $B^{+}\rightarrow \bar{D}^{\ast0} \pi^{+}$ decays will also be discussed, where $X_c{\bar{c}}$ denotes $\eta_c$, $J/\psi$, $\chi_c_0$, $\chi_c_1$, $\eta_c (2S)$, $\psi (2S)$, $\psi (3770)$, $X(3872)$ and $X(3915)$.

Further, the analysis results for the search of Z$_c$ pair production in $\Upsilon(1S)$ and $\Upsilon(2S)$ decays and in the $e^+e^-$ annihilation will be presented at the center of mass energies of 10.52, 10.58 and 10.867 GeV with Belle experiment.