2-9 July 2014
Valencia, Spain
Europe/Madrid timezone
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D leptonic decay and semi-leptonic decays from BESIII

Presented by Dr. Yangheng ZHENG on 4 Jul 2014 from 16:00 to 16:15
Type: Oral presentation
Track: Flavour Physics


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.


Room: Sala 8+9

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