Recent charm results from Belle

Abstract

Recent charm results from Belle experiment are presented in this proceedings, including (1) measurement of mixing parameter $y_{CP}=(0.96\pm 0.91\pm 0.62_{-0.00}^{+0.17})\%$ in $CP$-odd decay for the first time, (2) the first Dalitz-plot analysis of $D^0\to K^{-}{\pi }^{+}\eta$, (3) measurement of branching fractions of ${\Lambda }_c^{+}\to \eta {\Lambda }^0{\pi }^{+}$ and $\eta {\Sigma }^0{\pi }^{+}$ and intermediate processes ${\Lambda }_c^{+}\to [\Lambda (1670)\to \eta {\Lambda }^0]{\pi }^{+}$ and ${\Lambda }_c^{+}\to \eta \Sigma (1385{)}^{+}$ relative to ${\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+}$: $0.293\pm 0.003\pm 0.014$, $0.120\pm 0.006\pm 0.006$, $(5.54\pm 0.29\pm 0.73)\times 10^{-2}$, and $0.192\pm 0.006\pm 0.016$, respectively, and (4) first determination of the spin and parity of a charmed-strange baryon ${\Xi }_c(2970{)}^{+}$ which is consistent with the HQSS prediction for $J^P(s_l)=1/2^{+}(0)$.

7 pages, 5 figures, Proceedings for 40th International Conference on High Energy physics (ICHEP2020)