Remark on the effective range approach to the f_0-a_0 mesons

B.Kerbikov (ITEP)

Remark on the effective range approach to the f_0-a_0 mesons

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arxiv hep-ph/0402022 v2 pith:NTNBPOCJ submitted 2004-02-02 hep-ph

B.Kerbikov (ITEP) This is my paper · ORCID

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keywords effectivemesonsrangeapparentlyapproachapproachesbreit-wignerclarify

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Discussion of apparently simple issues related to the resonance close to threshold may lead to misleading results. We clarify some subtle points, in particular the relation between Breit-Wigner and effective range approaches to the f_0-a_0 mesons.

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Theory of resonances
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