Depletion
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Radiation of a system with
vacuum quantum numbers (σ).
The cc system
jumps to a lower lying
stable state: ψ(1,2S).
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Open-charm decay
via the creation of
a light quark-antiquark pair.
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Left:
Slow radiation process.
Right:
Fast open-charm decay.
The latter process dominates
at resonances and threshold enhancements.
arXiv:0904.4351
arXiv:1005.1010 (work with Jorge Segovia, Salamanca)
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