A QCD sum rule study of the light scalar mesons
classification
✦ hep-ph
keywords
scalarlightmesonnonetrulestatesantidiquarkapproach
read the original abstract
We examine the interpretation of the light scalar meson nonet as bound states of the scalar diquark and the scalar antidiquark using the QCD sum rule approach. Our results are obtained by means of the operator product expansion (OPE) including operators up to dimension 8. They show no evidence of the coupling of the tetraquark states to the light scalar meson nonet.
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