FIZIKA B 4 (1995) 3, 247-258

CHIRAL ANOMALY ROUTE TO THE K_L� p⁺ p^- g DECAY

KRE�IMIR KUMERI�KI and IVICA PICEK
Department of Physics, Faculty of Science, University of Zagreb, POB 162, 10000 Zagreb, Croatia

Dedicated to Professor Mladen Pai� on the occasion of his 90^th birthday

Received 27 June 1995

The increasing body of experimental data motivates us to investigate a new contribution to the radiative K_L� p⁺ p^- g decay, which is O(p⁴) within the framework of the chiral perturbation theory. The new contribution refers to the DS = 1 WZW action term, established recently for the direct, O(p⁴), K_L� gg(-) decay amplitude. We present additional evidence in support of such flavour-changing generalization of the WZW action term as a viable parametrisation of the anomalous radiative non-leptonic kaon decays.

UDC 539.12
PACS 12.15.-y, 12.39.Fe

Copyright by The Croatian Physical Society
For problems or questions please contact [email protected]