On lattice extraction of K --> pi pi amplitudes to O(p^4) in Chiral Perturbation Theory

Jack Laiho, Amarjit Soni

We show that lattice calculation of K --> pi pi and $epe$ amplitudes for (8,1) and (27,1) operators to O(p^4) in chiral perturbation theory is feasible when one uses K --> pi pi co…