Speaker
Varvara Batozskaya
(National Centre for Nuclear Research (PL))
Description
With the large datasets from $e^+e^-$ annihilation at the $J/\psi$ resonance collected at the BESIII experiment, multi-dimensional analyses leveraging polarization and entanglement can provide new insights into the hadronic structure of semileptonic decays. New studies at BESIII allow one to measure the form factor ratios of the (anti)hyperons in the decays $J/\psi\to\Lambda\bar{\Lambda}$ and $\Xi^-\bar{\Xi}^+$. Together with lattice QCD calculations, the value of the $V_{us}$ matrix element is extracted. Finally, the BESIII data sample collected at higher energy enables the measurement of semileptonic decays of $\Lambda_c^+$ and the extraction of the $V_{cs}$ matrix element value.
Author
Varvara Batozskaya
(National Centre for Nuclear Research (PL))