We argue that relatively compact charmonium states, J / ψ, ψ (2 S), χc, 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.
|Original language||English (US)|
|Number of pages||3|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Sep 4 2008|
Bibliographical noteFunding Information:
This work is supported in part by the DOE grant DE-FG02-94ER40823.