Revisiting semileptonic decays of $\Lambda_{b(c)}$ supported by baryon spectroscopy

The semileptonic decays of $\Lambda_{b}\to\Lambda_{c}^{(*)}\ell\nu_\ell$ and $\Lambda_{c}\to\Lambda^{(*)}\ell\nu_\ell$ are studied in the light-front quark model this work. Instead quark-diquark approximation, we use three-body wave functions obtained by baryon spectroscopy. ground states $(1/2^{+})$, $\lambda$-mode orbital excited $(1/2^{-})$, first radial $(1/2^{+})$ $\Lambda_{(c)}^{(*)}$ considered. discussions given for form factors, partial widths, branching fractions, leptonic forward-backward asymmetries, hadron polarizations, lepton flavor universalities. Our results useful inputs heavy understanding structures, helpful experimental measurements.