$K$ to $\pi \pi$ Decay amplitudes from Lattice QCD

T. Blum, P. A. Boyle, N. H. Christ +11

We report a direct lattice calculation of the $K$ to $\pi \pi$ decay matrix elements for both the $\Delta I=1/2$ and 3/2 amplitudes $A_0$ and $A_2$ on 2+1 flavor, domain wall fermion, $16^3\t…