PoS - Proceedings of Science
Volume 360 - ALPS 2019 An Alpine LHC Physics Summit (ALPS2019) - Flavour physics
(Semi-)leptonic decays of $D_{(s)}$ Mesons at BESIII
Y. Yang* and  On behalf of the BESIII collaboration
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Published on: February 08, 2021
Leptonic and semi-leptonic $D$ decays at BESIII contribute the most precise experimental measurement of $|V_{cs(d)}|$ and decay constants $f_{D_{(s)}}$ in the world based on 2.93 fb$^{-1}$ and $3.19~{\rm fb}^{-1}$ data taken at center-of-mass energies $\sqrt{s} = 3.773$ GeV and 4.178 GeV, respectively. The largest samples at the mass threshold of the charmed hadrons $D_{(s)}$ also provide chances to extract form factors of some semi-electronic decays for the first time and together with the semi-muonic decays we could understand lepton flavour universality better.
DOI: https://doi.org/10.22323/1.360.0021
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