2026年BESIII粲强子物理研讨会

$D$ meson decays into neutral kaons involve both Cabibbo-favored and doubly Cabibbo-suppressed amplitudes as well as final-state kaon mixing, providing abundant sources of CP violation.
In this work, we analyze CP asymmetries in the $D\to K^0_{S,L}P$ and $D\to K^0_{S,L}V$ decays, where $P$ and $V$ denote pseudoscalar and vector mesons respectively.
The formulas of the time-dependent and...

Within the basis light-front Hamiltonian approach, we investigate the structure and properties of the triply charmed baryon. Our framework begins with a phenomenological quark-quark Hamiltonian comprising a one-gluon exchange interaction and a holographic confinement potential, with parameters fully constrained by fits to the meson mass spectrum. While extending this same Hamiltonian to the...

We assess possible axial-vector states with $G$-parity $\left(G=\pm 1\right)$ dynamically generated by pseudoscalar-vector interactions in coupled channels, driven by the Weinberg-Tomozawa term at leading order in chiral perturbation theory. The $S$-wave amplitudes are unitarized via the Bethe-Salpeter equation, and poles of the unitarized amplitudes are searched for in the complex energy...

We present a study of two-body non-leptonic $D\to SS$ weak decays, where $S$ denotes a light scalar meson, including $a_0/a_0(980)$, $f_0/f_0(980)$, and $\sigma_0/f_0(500)$. We show that the conventional short-distance contributions from $W$-boson emission and annihilation (exchange) are strongly suppressed, allowing final-state interactions (FSIs) to play a dominant role. In particular, FSI...

该工作在手征幺正方法框架下，通过 S 波赝标介子-八重态重子相互作用动态产生低激发重子 $\Sigma^*(1/2^-)$，同时考虑中间共振态 $K^*(892)$ 与 $N(1535)$的贡献，研究了单Cabibbo压低过程 $\Lambda_c^+ \to \Lambda K^0 \pi^+$；计算结果与BESIII测量的$\pi^+ K^0$ 不变质量分布的实验数据符合很好（$\chi^2/\mathrm{d.o.f.} = 0.98$），并在$\pi^+ \Lambda$ 不变质量谱约 $1.43~\mathrm{GeV}$ 处预言了与$\Sigma^*(1/2^-)$ 相联系的 cusp 结构。