PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Quark and Lepton Flavour Physics
(Semi-)leptonic D$_{(s)}$ decays at BESIII
I. Balossino
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Pre-published on: December 06, 2022
Published on:
Abstract
BESIII has collected $2.93$ and $6.32\,\mathrm{fb^{-1}}$ of e$^+$e$^-$ collision data samples at $3.773$ and
$4.178$-$4.226$ GeV, respectively. We will report precision measurements of $f_{D_{(s)}}$, $|V_{cs}|$,
and test of lepton flavor universality by studying the leptonic decays of $D_s^+ \rightarrow l \nu$
with $\tau^+ \rightarrow \rho^+ \nu$, $\pi^+ \nu$, and $e^+ \nu \nu$. We will also report the observation of
semileptonic decay of $D^0 \rightarrow \rho^-\mu^+\nu$ and lepton flavor universality test, and the
studies of some other semileptonic decays, such as $D_s^+ \rightarrow \pi^0\pi^0e^+\nu$ and $D_s^+ \rightarrow K_s^0 K_s^0 e^+\nu$.
DOI: https://doi.org/10.22323/1.414.0699
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