Journal
PHYSICAL REVIEW D
Volume 81, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.81.074033
Keywords
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Funding
- Science & Technology Facilities Council (UK)
- EU [MRTN-CT-2006-035482]
- U.S. DOE [DE-AC05-06OR23177]
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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).
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