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. These constitute the world's largest samples of D anti-D and Ds anti-Ds pairs, respectively, providing a unique laboratory to probe the non-perturbative dynamics of Quantum Chromodynamics (QCD) in the charm sector. We will present the measurement of branching fractions of fifteen Ds+ hadronic decays using a global fit. Furthermore, we report recent advancements in amplitude analyses of D to pi pi eta, D+ to pi+ pi0pi0/etaeta, D0 to Ks pi0 pi0 as well as D(s)+ to KSKLpi+, Ds+ to pi+pi+pi-pi0 (pi0). These analyses allow for detailed investigations of intermediate processes involving scalar mesons and the polarization properties of D to vector-vector decays. We also observe deviations in the branching fractions of phi-meson decays from the Particle Data Group (PDG) world averages, as well as anomalously large branching fractions for decays dominated by W-annihilation topologies.
| 请选择分会 | 强子物理与味物理 |
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