Approach to $K\to \ell {\nu }_{\ell }{\ell }^{\prime +}{\ell }^{\prime -}$ decay width on lattice

Xin-Yu Tuo

Lattice QCD plays an increasing role in reducing theoretical uncertainties in kaon decays. Here we focus on kaon decay channels $K\to \ell {\nu }_{\ell }{\ell }^{\prime +}{\ell }^{\prime -}$, which are closely…