NEW CONTRIBUTION TO ANOMALOUS RADIATIVE K(0)-DECAYS

We present a new contribution to the K(L) --> gammagamma amplitude, wh ich is O(p4) within the counting rules of chiral perturbation theory. This direct (non-pole) amplitude, obtained from short-distance s --> d gamma quark diagrams of order eG(F)alpha(s)/pi, and similar s --> dgam magamma diagrams, can account for about half of the experimental ampli tude. Closely following the description of the pi0 --> gammagamma and K(L) --> gammagamma processes in the variants of the same low-energy Q CD, we find that both of these processes are anomalous in the same sen se. Then, by the anomaly-matching principle, we arrive from the chiral -quark to the bosonic counterparts for both of these processes. In thi s way we add the K(L) --> gammagamma decay to the existing list of ano malous radiative prosesses.