Speaker
Description
BESIII has collected 2.93 and 7.33 fb$^{-1}$ of $e^+e^-$ collision data samples at 3.773 and 4.128-4.226 GeV, which provide the largest dataset of $DD^-$ and $D_s D_s$ pairs in the world, respectively.
In this talk, we will report the updated measurements of $|V_{cs}|$ in $D^+_s\to \tau^+\nu$ and the form factor studies in $D^+_s\to K^+K^- e^+\nu$ and $\pi^+\pi^-e^+\nu$. In addition, we will report the most updated amplitude analyses of Cabibbo-favored and -suppressed $D_s$ decays at BESIII, including the observation of a new $a_0$-like state at 1.817 GeV, the branching fraction measurements of $D$ mesons decay involving $K^0_L$ and multiple kaons/pions, and the doubly Cabibbo-suppressed decay $D_0\to K^+ \pi^-\pi^0$. We will also report the improved measurement of the strong-phase difference in quantum-correlated $DD$ decays. Finally, we will introduce prospect on measurements of charmed meson hadronic decays with the coming 20 fb$^{-1}$ at 3.773 GeV data collected by BESIII.
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