The hadronic decays of charmed mesons at BESIII

TL;DR

This paper reports on recent observations and amplitude analyses of hadronic decays of charmed mesons at BESIII, revealing complex structures and decay ratios that inform non-perturbative QCD and CP violation studies.

Contribution

It provides new experimental results on charmed meson decay modes and detailed amplitude analyses, enhancing understanding of hadronic decay dynamics.

Findings

Observation of multiple decay channels with rich structures

Measurement of the $oldsymbol{\phi}$ decay ratio in $D_s^{ mf extpm}$ decays

Implications for non-perturbative QCD and CP violation

Abstract

In this presentation, we discuss the recent hadronic decays of charmed mesons observed in the BESIII experiment, specifically focusing on the decay processes $D^+ \to K_S^0 \pi^+ \eta$, $D^0 \to \pi^+ \pi^- \eta$, $D^+ \to \pi^+ \pi^0 \eta$, $D_s^+ \to \pi^+ \pi^+ \pi^- \pi^0$, $D_s^+ \to \pi^+ \pi^+ \pi^- \pi^0 \pi^0$, $D_s^+ \to K_S^0 K_L^0 \pi^+$, and $D^+ \to K_S^0 K_S^0 \pi^+$. We present results from amplitude analyses revealing rich structures in these decay processes. Furthermore, we report on the $\phi$ decay ratio in $D_s^{\pm}$ decays. Our findings have significant implications for fundamental inputs related to non-perturbative QCD, hadronic matter structure, and studies of $\mathit{CP}$ violation.