2010/01/14 by Frank Close, Clark Downum, Christopher E. Thomas · 1 citation
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.81.074033
published as Phys.Rev.D81:074033,2010 · 14 pages, 5 figures and 5 tables
arxiv created 2010/01/14 · openalex publication_date 2010/04/29 · arxiv updated 2010/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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*, D1 a spectroscopy arises consistent with enigmatic charmonium states observed above 4 GeV in e+e^\ensuremath- annihilation. A possible explanation of Y(4260)\ensuremath→\ensuremathψ\ensuremathπ\ensuremathπ and Y(4360)\ensuremath→\ensuremathψ^\ensuremath'\ensuremathπ\ensuremathπ 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 DD3\ensuremathπ is recommended to test this hypothesis. An exotic 1^\ensuremath-+ is predicted to occur in the vicinity of the Y(4260).