Semileptonic Decays of $Λ\to p \ell^{-} \barν_{\ell}$ in the Light-Front Dynamics

We investigate the exclusive semileptonic decays of $Λ\to p \ell^{-} \barν_{\ell}~(\ell=e,μ)$ within the Standard Model using the light-front quark model. The transition form factor behaviors of $Λ\to p$ are obtained from the effective treatment of nonvalence contributions in addition to the valence