Speaker
Description
The BESIII experiment has collected 20.3 fb-1 and 7.33 fb-1 of e+e- collision data at center-of-mass energies of 3.773 GeV and 4.128-4.226 GeV, respectively. This presentation will provide an overview of recent studies using (semi)-leptonic D decays at BESIII. We will present the first experimental investigation of Ds+ to l+ nu decays, along with improved measurements of the CKM matrix elements |Vcd| and |Vcs|, and the decay constants fDs+ and fD+ via Ds+/D+ to mu+ nu and tau+ nu decays. Furthermore, we will summarize the most precise results for the transition form factors in D(s) to K, D to pi, and D(s) to eta(') decays. Complementing these leptonic studies, we will discuss progress in semileptonic analyses, including amplitude analyses and branching fraction measurements of D(s) to hh l+ nu and hhh l+ nu processes. These studies explore the hadron spectrum through scalar (a0, f0, sigma), vector (K, phi), and axial-vector (K1, b1) mesons, and will present experimental results for form factors in decays such as D to a0(980), D to sigma, D to K*, Ds to f0(980), and Ds to phi.
| 请选择分会 | 强子物理与味物理 |
|---|
