Recent charm results from Belle
hep-ex
/ Authors
/ Abstract
Recent charm results from Belle experiment are presented in this proceedings, including (1) measurement of mixing parameter $y_{CP}=(0.96\pm0.91\pm 0.62^{+0.17}_{-0.00})\%$ in $CP$-odd decay for the first time, (2) the first Dalitz-plot analysis of $D^0\to K^-π^+η$, (3) measurement of branching fractions of $Λ_c^+\toηΛ^0π^+$ and $ηΣ^0π^+$ and intermediate processes $Λ_c^+\to[Λ(1670)\toηΛ^0]π^+$ and $Λ_c^+\toηΣ(1385)^+$ relative to $Λ_c^+\to p K^-π^+$: $0.293\pm0.003\pm0.014$, $0.120\pm0.006\pm0.006$, $(5.54\pm0.29\pm0.73)\times10^{-2}$, and $0.192\pm 0.006\pm 0.016$, respectively, and (4) first determination of the spin and parity of a charmed-strange baryon $Ξ_c(2970)^+$ which is consistent with the HQSS prediction for $J^P(s_l)=1/2^+(0)$.