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

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arxiv nucl-th/0410099 v1 pith:NLVLSRWE submitted 2004-10-25 nucl-th hep-ph

V. Baru , J. Haidenbauer , C. Hanhart , A. Kudryavtsev , Ulf-G. Meissner This is my paper
classification nucl-thhep-ph
keywords constantscouplingflatte-likekkbarmesonsabsoluteamplitudeargue
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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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