Is the a0(980) resonance a K anti-K bound state?

Agnieszka Furman , Leonard Lesniak (The Henryk Niewodniczanski Institute of Nuclear Physics , Polish Academy of Sciences , Krakow , Poland)

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classification ✦ hep-ph

keywords anti-kboundchannelmodelresonancestatealthoughanalysed

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We have analysed properties of two resonances a0(980) and a0(1450) using the pion-eta and K anti-K coupled channel model. Although the forces in the scalar-isovector K anti-K channel are attractive the a0(980) resonance cannot be interpreted as a kaon-antikaon bound state within our model.

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Is the a0(980) resonance a K anti-K bound state?

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