2-9 julio 2014
Valencia, Spain
Europe/Madrid timezone

D leptonic decay and semi-leptonic decays from BESIII

4 jul. 2014 16:00
Sala 8+9 ()

Sala 8+9

Oral presentation Flavour Physics Flavour Physics


Dr. Yangheng Zheng (University of Chinese Academy of Sciences)


Based on 2.92/fb of data accumulated at psi(3770), BESIII measured the branching ratio of (D+ —> mu+ nu) is about (3.71+/-0.19+/-0.06)x 10^{-4}, and determine the weak decay constant f_D=(203.2+/-5.3+/-1.8)MeV. these are the most precise results. Based on the psi(3770) -> DDbar data accumulated at the BESIII experiment, we present studies of D0 -> K- e+ nu and D0 -> pi0 e+ nu decays which include preliminary results of B(D0 -> K- e+ nu) , B(D0 -> pi- e+ nu), as well as the partial decay rates of these decays in q^2 bins. The measured partial decay rates, in return, allow us to determine different parameterizations of the form factors.

Autor primario

Prof. Changzheng YUAN (IHEP, Beijing)

Materiales de la presentación

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