English

Recent charm results from Belle

High Energy Physics - Experiment 2021-02-09 v1

Abstract

Recent charm results from Belle experiment are presented in this proceedings, including (1) measurement of mixing parameter yCP=(0.96±0.91±0.620.00+0.17)%y_{CP}=(0.96\pm0.91\pm 0.62^{+0.17}_{-0.00})\% in CPCP-odd decay for the first time, (2) the first Dalitz-plot analysis of D0Kπ+ηD^0\to K^-\pi^+\eta, (3) measurement of branching fractions of Λc+ηΛ0π+\Lambda_c^+\to\eta\Lambda^0\pi^+ and ηΣ0π+\eta\Sigma^0\pi^+ and intermediate processes Λc+[Λ(1670)ηΛ0]π+\Lambda_c^+\to[\Lambda(1670)\to\eta\Lambda^0]\pi^+ and Λc+ηΣ(1385)+\Lambda_c^+\to\eta\Sigma(1385)^+ relative to Λc+pKπ+\Lambda_c^+\to p K^-\pi^+: 0.293±0.003±0.0140.293\pm0.003\pm0.014, 0.120±0.006±0.0060.120\pm0.006\pm0.006, (5.54±0.29±0.73)×102(5.54\pm0.29\pm0.73)\times10^{-2}, and 0.192±0.006±0.0160.192\pm 0.006\pm 0.016, respectively, and (4) first determination of the spin and parity of a charmed-strange baryon Ξc(2970)+\Xi_c(2970)^+ which is consistent with the HQSS prediction for JP(sl)=1/2+(0)J^P(s_l)=1/2^+(0).

Keywords

Cite

@article{arxiv.2102.03703,
  title  = {Recent charm results from Belle},
  author = {Longke Li},
  journal= {arXiv preprint arXiv:2102.03703},
  year   = {2021}
}

Comments

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

R2 v1 2026-06-23T22:54:28.335Z