Emerging understanding of the ΔI = 1/2 Rule from Lattice QCD

P. A. Boyle, N. H. Christ, N. Garron +8

There has been much speculation as to the origin of the ΔI = 1/2 rule (Re A_0/Re A_2 \simeq 22.5). We find that the two dominant contributions to the ΔI=3/2, K \to ππ correlation f…