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Flatte-like distributions and the a_0(980)/f_0(980) mesons

V. Baru·J. Haidenbauer·C. Hanhart·A. Kudryavtsev·Ulf-G. Meissner
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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 a_0(980) and f_0(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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V. Baru, J. Haidenbauer, C. Hanhart, A. Kudryavtsev, Ulf-G. Meissner. 2004-10-25. Flatte-like distributions and the a_0(980)/f_0(980) mesons. https://doi.org/10.1140/epja%2Fi2004-10105-x

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