Jan 10 – 14, 2022
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(Semi-)Leptonic D decays at BESIII

Jan 12, 2022, 12:20 PM
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Parallel session talk Flavour Quark and charged lepton flavour


Lanxing Li (University of Manchester (GB))


BESIII has collected 2.93 fb-1 of data at 3.773 GeV, and 6.3 fb-1 of data between 4.18 and 4.23 GeV, respectively. We will report precison measurements of the decay constants fDs+ and the CKM matrix elements |Vcs| via D(s)+ -> l+v (l=mu, tau), which are important to test the LQCD calculations and the CKM matrix unitarity. We will also present observation of semileptonic decays of D0(+) -> K_1(1270) e+ nu, D0 -> rho- mu+ nu, and D+->omega mu+ nu. Tests of lepton flavor universality are also made via leptonic and semileptonic D decays. Also, precision measurements of form factors of Ds->K K e+ nu and pi pi e+ nu will be reported.

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