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A Tentative Description of Z_c,b States in Terms of Metastable Feshbach Resonances

We attempt a description of the recently discovered Z_{c,b} states in terms of Feshbach resonances arising from the interaction between the `closed' subspace of hadrocharmonium levels and the `open' one of open-charm/beauty thresholds. We show how the neutrality of the X(3872) might be understood in this scheme and provide a preliminary explanation of the pattern of the measured total widths of X,Z_{c,b}.

preprint2013arXivOpen access
M. PapinuttoF. PiccininiA. PilloniA. D. PolosaN. Tantalo
hep-ph
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Open access5 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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M. PapinuttoF. PiccininiA. PilloniA. D. PolosaN. Tantalo

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