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2008

Hadro-Charmonium

Dubynskiy, S., Voloshin, M. B.

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We argue that relatively compact charmonium states, $J/\psi$, $\psi(2S)$, $\chi_c$, can very likely be bound inside light hadronic matter, in particular inside higher resonances made from light quarks and/or gluons.

The charmonium state in such binding essentially retains its properties, so that the bound system decays into light mesons and the particular charmonium resonance.
Thus such bound states of a new type, which we call hadro-charmonium, may explain the properties of some of the recently observed resonant peaks, in particular of Y(4.26), Y(4.32-4.36), Y(4.66), and Z(4.43).
We discuss further possible implications of the suggested picture for the observed states and existence of other states of hadro-charmonium and hadro-bottomonium.

Hadro-Charmonium · Around

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S. Godfrey and S. L. Olsen, arXiv:0801.3867 [hep-ph]
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Cited in the paper.
Most recently the resonance Y ⁡ ( 4.66 ) Y(4.66) has been discussed in terms of a bound state of ψ ⁡ ( 2 S ) \psi(2S) with f 0 ( 980 ) f_{0}(980) , which can be viewed as a particular realization of a hadro-charmonium state, in F.-K. Guo, C. Hanhart and U.-G. Meißner, arXiv:0803.1392 [hep-ph]
Cited in the paper.

Then

A. Karch, E. Katz, D. T. Son and M. A. Stephanov, Phys. Rev. D 74
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2008
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