Testing the hadro-quarkonium model on the lattice

Abstract

Recently the LHCb experiment found evidence for the existence of two exotic resonances consisting of $c\bar{c}uud$ 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 $N_f$=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.

Comments: 7 pages, 6 figures. Proceedings from the 34th Annual International Symposium on Lattice Field Theory, 24-30 July 2016, University of Southampton, UK