Polarization observables in semileptonic $V\to P$ decays of quarkonia

Chien-Thang Tran, Mikhail A. Ivanov, Ngoc-Dung Nguyen +1

We investigate the weak semileptonic decays of the charmonium $J/\psi$ and bottomonium ${\rm Y}(1S)$ into a pseudoscalar meson, namely, the $J/\psi \to D_{(s)}\ell {\bar{\nu }}_{\ell }$ and $Υ(1S)\to B_{(…