Novel charmonium and bottomonium spectroscopies due to deeply bound hadronic molecules from single pion exchange

Pion exchange in S-wave between hadrons that are themselves in a relative S-wave is shown to shift energies by hundreds of MeV, leading to deeply bound quasimolecular states. In the case of charmed mesons D*, D-1 a spectroscopy arises consistent with enigmatic charmonium states observed above 4 GeV in e(+)e(-) annihilation. A possible explanation of Y(4260) -> psi pi pi and Y(4360) -> psi'pi pi is found. We give results for all isospin and charge-conjugation combinations, and comment on flavor exotic doubly charmed states and bottomonium analogs. A search in D (D) over bar3 pi is recommended to test this hypothesis. An exotic 1(-+) is predicted to occur in the vicinity of the Y(4260).