Speaker
Description
BESIII has collected 2.93 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 DDbar and DsDs pairs in the world, respectively.
As for the hadronic decays, we will present the observation of D+ to Ks a0(980) and a new a0-like state with a mass of 1.817 GeV, and the determination of U-spin breaking parameters of the decay D0 to KL pi+ pi-, along with the amplitude analyses of D0(+) to 4pi and D+ to Kspi+pi0pi0. Our presentation will also include the latest measurements of quantum-correlated DD decays, including the CP-even fraction of D0 to Kspi+pi-pi0, KKpipi, and more.
As for the (semi-)leptonic decays, we will present the first experimental study of Ds* to e nu and the improved measurements of |Vcs| and Ds decay constant in Ds+ -> mu+ nu and tau+ nu. Furthermore, we will present the Ds->eta(‘), Ds->f0(980), and Ds->phi form factor studies in Ds+->eta(‘) l+ nu, Ds+->pi+pi- e+ nu, and Ds+->K+K- l+ nu.