Orateur
Mlle
Huijing Li
(The institute of High Energy Physics, Chinese Academy of Sciences)
Description
The BESIII experiment at the Beijing Electron Positron Collider(BepcII) accumulated the world's largest e+ e- collision samples at 3.773 and 4.178 GeV. From analyses of D^{0(+)}-> K l+ nu and Ds+ -> l+ nu decays, we determine the CKM mattrix element |Vcs|, The form factors of D^{0(+)} semi-leptonic decays f_{K^{+(0)}}, the Ds+ decat constants f_{D_{s}^{+}}. The measured |Vcs| is important to test the unitarity of the CKM matrix, while f_{K^{0(+)}} and f_{D_{s}^{+}} to calibrate the LQCD calculations. We also report the Lepton Universality test in D-> pi l nu decays.
Auteur principal
Mlle
Huijing Li
(The institute of High Energy Physics, Chinese Academy of Sciences)
