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arXiv · 1803.06883

Tetraquarks in the 1/N Expansion: a New Appraisal

Luciano Maiani·Antonio D. Polosa·Veronica Riquer
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Abstract

We discuss the necessary, albeit not sufficient, conditions for tetraquark poles to occur in the 1/N expansion of QCD and find the minimum order at which such poles may appear. Assuming tetraquark poles, we find a new non-planar solution with the minimal number of topologies and tetraquark species. The solution implies narrow states. Mixing with quarkonium states is allowed so that P-wave tetraquarks with J^PC=1^-- would couple to e^+e^-.

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Luciano Maiani, Antonio D. Polosa, Veronica Riquer. 2018-03-19. Tetraquarks in the 1/N Expansion: a New Appraisal. https://doi.org/10.1103/physrevd.98.054023

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