Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Parallel: Quark and Lepton Flavour Physics
Recent charm results from Belle
L. Li* On behalf of the BELLE Collaboration
*corresponding author
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Pre-published on: February 09, 2021
Published on:
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) Dalitz-plot analysis of $D^0\to K^-\pi^+\pi^0$ for the first time,
(3) measurement of branching fractions of $\Lambda_c^+\to\eta\Lambda\pi^+$ and $\eta\Sigma^0\pi^+$: $0.293\pm0.003\pm0.014$ and $0.293\pm0.003\pm0.014$, respectively, and two intermediate processes $\mathcal{B}(\Lambda_c^+\to[\Lambda(1670)\to\eta\Lambda]\pi^+)=(3.48\pm0.19\pm0.46\pm0.18)\times10^{-3}$ and $\mathcal{B}(\Lambda_c^+\to\eta\Sigma(1385)^+)=(1.21\pm0.04\pm0.10\pm0.06)\%$,
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 $J^P(s_l)=1/2^+(0)$.
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