ALPS2019 -- Fourth Alpine LHC Physics Summit

(Semi)-Leptonic D(s) decays at BESIII

23 Apr 2019, 18:30

15m

UZ Obergurgl

Afternoon Session Flavor and hadron physics Contributed talks

Speaker

Mr Youhua Yang (Nanjing University)

Description

Leptonic and semi-leptonic $D$ decays at BESIII contribute the most precise experimental measurement of $|V_{cs(d)}|$ and form factor $f_{D_{(s)}}$ in the world based on 2.93 fb${}^{-1}$ and 3.19 fb${}^{-1}$ data taken at center-of-mass energies $\sqrt{s}=3.773$ and 4.180~GeV, respectively. The largest samples at the mass threshold of the charmed hadrons $D_{(s)}$ also provide chances to extract form factors of some semi-electronic decays for the first time and together with the semi-muonic decays we could understand lepton flavour universality better. This talk would introduce the recent results of leptonic and semi-leptonic $D_{(s)}$ decays at BESIII.

Presentation materials

ALPS2019_yyh.pdf