Charmed baryonium.

  title={Charmed baryonium.},
  author={G. Cotugno and Riccardo Faccini and A. D. Polosa and Chiara Sabelli},
  journal={Physical review letters},
  volume={104 13},
We reanalyze the published data on the Y(4630)-->Lambda(c) Lambda(c) and the Y(4660)-->psi(2S)pi pi with a consistent ansatz and we find that the two observations are likely to be due to the same state Y(B), produced via initial state radiation (ISR), with M(Y(B))=4660.7+/-8.7 MeV and Gamma(Y(B))=61+/-23 MeV. Under this hypothesis and reanalyzing the e+e- -->J/psi pi pi gamma(ISR) spectrum we find B(Y(B))-->Lambda(c) Lambda(c))/B(Y(B))-->psi(2S)pi pi)=117+/-44, B(Y(B))-->J/psi pi pi)/B(Y(B… 

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See also F. Wilczek

  • Diquarks as inspiration and as objects