Exotic Tetraquark Mesons in Large-N_c Limit: an Unexpected Great Surprise
classification
✦ hep-ph
keywords
exoticlarge-tetraquarkconsistencyconstrainscontributionscriteriafulfilment
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Two-ordinary-meson scattering in large-$N_c$ QCD implies consistency criteria for intermediate-tetraquark contributions. Their fulfilment at $N_c$-leading order constrains the nature of the spectrum of genuinely exotic tetraquark states.
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