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arXiv · 1405.1551

The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks

L. Maiani·F. Piccinini·A. D. Polosa·V. Riquer
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Abstract

Following the recent confirmation of the Z+(4430) resonance with J^{PG}=1^{++}, we have re-examined the model of S- and P-wave tetraquarks. We propose a `type-II' diquark-antidiquark model which shows to be very effective at producing a simple and comprehensive picture of the J^{PG}=1^{++} and 1^{--} sectors of the recently discovered charged tetraquarks and of the observed Y resonances. The model is still faced with the unresolved difficulty of explaining why some states seem to have incomplete isospin multiplets.

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L. Maiani, F. Piccinini, A. D. Polosa, V. Riquer. 2014-05-17. The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks. https://doi.org/10.1103/physrevd.89.114010

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