Apr 3 – 7, 2017
University of Birmingham
Europe/London timezone

Charm physics at BESIII

Apr 4, 2017, 4:00 PM
20m
West Building Seminar Room 1

West Building Seminar Room 1

WG5) Physics with Heavy Flavours WG5 Physics with Heavy Flavours

Speaker

Xin Shi (Chinese Academy of Sciences (CN))

Description

BESIII collected the world largest data samples of 2.93, 0.482 and 0.567 fb-1 data at 3.773, 4.009 and 4.6 GeV, respectively. Based on these data samples, BESIII perform some analyses of $D^{0(+)}$, $D_{s}^{+}$ and $\Lambda_{c}^{+}$, which are important to understand the weak decay machanisms of charmed mesons and baryons. The leptonic decays of $D^{+} \to \tau^{+}\nu_{\tau}$ and $D_{s}^{+} \to \ell^{+}\nu_{\ell}$ are measured. The dynamics of $D^{+} \to \bar{K}^{0} e^{+}\nu_{e}$, $\pi^{0}e^{+}\nu_{e}$ and $K^{-}\pi^{+}e^{+}\nu_{e}$ are studied, and the parameters of the form factors and CKM matrix elements $|V_{cs(d)}|$ are extracted. In addition, the branching fractions for $D^{+} \to \bar{K}^{0} \mu^{+}\nu_{\mu}$, $\bar{K}^{0} e^{+}\nu_{e}$, $D_{s}^{+} \to \eta(')e^{+}\nu_{e}$ are also provided. The amplitude analysis of $D^{0} \to K^{-}\pi^{+}\pi^{+}\pi^{-}$ is performed. The asymetries of $D^{+} \to K_{\mathrm{S/L}}K^{+}(\pi^{0})$ and $D^{0} \to K_{\mathrm{S/L}}\pi^{0}(\pi^{0})$ decays are measured. The branching fractions for $D^{+} \to 2K_{\mathrm{S}}K^{+}$, $2K_{\mathrm{S}}\pi^{+}$, $D^{0} \to 2K_{\mathrm{S}}$, $3K_{\mathrm{S}}$ as well as $D^{0(+)} \to$ other 14 channels of $PP$ final states are determined. And, the measurement results of the Singly-Cabibbo-suppressed decays $\Lambda_{c}^{+} \to p\pi^{+}\pi^{-}$, $pK^{+}K^{-}$, $p\eta$ and $p\pi^{0}$, the Cabibbo-favored decays of $\Lambda_{c}^{+} \to nK_{\mathrm{S}}\pi^{+}$ and $\Sigma^{-}\pi^{+}\pi^{+}(\pi^{0})$ as well as the inclusive decay of $\Lambda + \mathrm{anything}$ have been obtained.

Presentation materials