Journal or Book Title
PHYSICAL REVIEW D
An analysis of electromagnetic corrections to the (dominant) octet K → ππ hamiltonian using chiral perturbation theory is carried out. Relative shifts in amplitudes at the several per cent level are found.
Cirigliano, V; Donoghue, JF; and Golowich, Eugene, "Electromagnetic corrections to K ->pi pi. I. Chiral perturbation theory" (2000). PHYSICAL REVIEW D. 116.