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arXiv · 0704.3384

Decay channels and charmonium mass-shifts

M. R. Pennington·D. J. Wilson
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Abstract

The discovery in the last few years of the $X, Y$ and $Z$ states of the extended charmonium family has highlighted the importance of the closeness of decay channels to an understanding of these mesons. We aid this debate by illustrating a simple calculational procedure for including the effect of open and nearby closed channels.

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M. R. Pennington, D. J. Wilson. 2007-05-02. Decay channels and charmonium mass-shifts. https://doi.org/10.1103/physrevd.76.077502

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