Testing the hadro-quarkonium model on the lattice
Abstract
Recently the LHCb experiment found evidence for the existence of two exotic resonances consisting of ccuud quarks. Among the possible interpretations is the hadro-charmonium model, in which charmonium is bound "within" a light hadron. We test this idea on CLS Nf=2+1 lattices using the static formulation for the heavy quarks. We find that the static potential is modified by the presence of a hadron such that it becomes more attractive. The effect is of the order of a few MeV.
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