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arXiv · 1409.3551

Probing the nature of Z_c states via the eta_c rho decay

A. Esposito·A. L. Guerrieri·A. Pilloni
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Abstract

The nature of the so-called XYZ states is a long-standing problem. It has been suggested that such particles may be described as compact four-quark states or loosely bound meson molecules. In the present work we analyze the Z_c(') -> eta_c rho decay using both approaches. Such channel might provide useful insights on the nature of the Z_c('), helping discriminating between the two different models.

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A. Esposito, A. L. Guerrieri, A. Pilloni. 2015-04-27. Probing the nature of Z_c states via the eta_c rho decay. https://doi.org/10.1016/j.physletb.2015.04.057

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