Flatte-like distributions and the a0(980)/f0(980) mesons
V. Baru, J. Haidenbauer, C. Hanhart, A. Kudryavtsev, Ulf-G. Meissner
Abstract
We explore the features of Flatte-like parametrizations. In particular, we demonstrate that the large variation in the absolute values of the coupling constants to the pi-eta (or pi-pi) and KKbar channels for the a0(980) and f0(980) mesons that one can find in the literature can be explained by a specific scaling behaviour of the Flatte amplitude for energies near the KKbar threshold. We argue that the ratio of the coupling constants can be much better determined from a fit to experimental data.
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