235 citations · 1.1k across the 21 of their papers we have counts for
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The decay as a discriminant between tetraquarks and meson molecules
Angelo Esposito, Andrea L. Guerrieri, Alessandro Pilloni
Understanding the nature of the exotic XYZ resonances is one of the open problems in hadronic spectroscopy. Despite the experimental efforts, the structure of these particles still…
Four-Quark Hadrons: an Updated Review
Angelo Esposito, Andrea L. Guerrieri, Fulvio Piccinini +2
The past decade witnessed a remarkable proliferation of exotic charmonium-like resonances discovered at accelerators. In particular, the recently observed charged states are clearl…
A note on the newly observed Y(4220) resonance
R. Faccini, G. Filaci, A. L. Guerrieri +2
BES III Collaboration has recently observed a vector resonance in the chi_{c0} omega channel, at a mass of about 4220 MeV, named Y(4220). Hints of a similar structure appear in the…
Probing the nature of Z_c states via the eta_c rho decay
A. Esposito, A. L. Guerrieri, A. Pilloni
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 mo…