Lattice studies of charmonia and exotics

Understand

The lattice QCD simulations of charmonia and exotic charmonium-like states are reviewed.

• I report on the first exploratory simulation of charmonium resonances above open charm threshold which takes into account the strong decay.
• The puzzles related to the first-excited scalar charmonia are discussed.
• Evidence for X(3872) is presented along with investigation of its Fock components.