ENERGY PEAKS FOR THREE-BODY MESON SYSTEMS,
PURDUE UNIV LAFAYETTE IND
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In direct meson-unstable meson systems energy peaks are found for which there are no definite spin nor isospin quantum numbers and are thus not resonances in the conventional sense. It is questioned whether such peaks will generate resonances in coupled channels when the crossed one meson exchange diagram is joined by unitarity to final andor initial system involving stable mesons only. The unitarity problem is discussed and it is shown that in general no resonance is expected in the coupled channels.