Depletion
     
     
Radiation of a system with
  vacuum quantum numbers (σ).  
The cc system
jumps to a lower lying
stable state: ψ(1,2S).
Open-charm decay
via the creation of
  a light quark-antiquark pair.  



  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)