Speaker
Description
BESIII has collected 20.3 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 $D\bar{D}$ and $D_sD_s$ pairs in the world, respectively.
We will present the measurement of branching fractions of fifteen $D_s^+$ hadronic decays using a global fit and highlight our recent advancements in amplitude analyses of $D^+ \to K_s \pi^+ \eta$, $D \to \pi \pi \eta$, $D^+ \to K_s K_s \pi^+$, $D^+ \to K^- \pi^+ \pi^+ \pi^0$, $D_s^+ \to \pi^+ \pi^+ \pi^- \pi^0$, and $D_s^+ \to \pi^+ \pi^+ \pi^-\pi^0 \pi^0$.
In these amplitude analyses, we observe the $D^+ \to K_s a_0(980)^+$, $D \to a_0(980) \pi$, and $D_s^+ \to \omega \rho^+$ decays, along with deviations in the branching fractions of $\phi$ decays from the PDG average.
