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arXiv · 1311.7374

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

M. Papinutto·F. Piccinini·A. Pilloni·A. D. Polosa·N. Tantalo
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Abstract

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}.

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M. Papinutto, F. Piccinini, A. Pilloni, A. D. Polosa, N. Tantalo. 2013-11-28. A Tentative Description of Z_c,b States in Terms of Metastable Feshbach Resonances. https://arxiv.org/abs/1311.7374

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