Is the a0(980) resonance a K anti-K bound state?
  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. 
Agnieszka Furman, Leonard Lesniak (The Henryk Niewodniczanski   Institute of Nuclear Physics, Polish Academy of Sciences, Kr...