Speaker
Tian Ma
Description
The world's largest e+e- collision samples at 3.773, 4.009 and 4.18 GeV have been collected at BESIII. By analyzing the decays of D(s)+ to l+v (l=mu,tau), D to K(pi)-l+v(l=e,mu), we report the determinations of CKM matrix elements |Vcs(d)|, D(s)+ decay constants, form factors of D semi-leptonic decays. These are important to calibrate the LQCD calculations of decay constant and form factors and to test the CKM unitarity. We will also report the studies of the rare decays D0(+) -> f_0(980)0(-)e+v, D+ -> K/pi ee, D0 e+v and gamma e+v, which can be used to search for new physics beyond the standard model.
