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Volume 326 - The International Conference on B-Physics at Frontier Machines (BEAUTY2018) - Session: Charm Physics
Semi-leptonic and leptonic $D^{0(+)}$ and $D_s$ decays at BESIII
G. Mezzadri* On behalf of the BESIII collaboration
*corresponding author
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Pre-published on: 2018 October 03
Published on: 2018 October 30
Precision measurements of the $\vert V_{cs} \vert$ matrix element are crucial to test the unitarity of the CKM matrix. $D$ and $D_s$ decays are one of the best environments to perform such measurements. Moreover, an improved knowledge of the $D$/$D_s$ decay can help to calibrate the LQCD calculations. The BESIII Experiment at Beijing Electron Positron Collider II (BEPC-II) has accumulated the world$'$s largest $e^+e^-$ collision samples at 3.773 and 4.178 GeV. In this presentation, we report the measurement of leptonic and semileptonic $D^{0(+)}$ and $D_s$ decay at BESIII, with focus on $\vert V_{cs} \vert$ determination, form factor and decay constant estimations. In addition, we report the LFU test in $D \rightarrow \pi l \nu$ decays.
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