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arXiv · 0905.2687

On the possibility of Deeply Bound Hadronic Molecules from single Pion Exchange

Frank Close·Clark Downum
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Abstract

Pion exchange in S-wave between hadrons that are themselves in a relative S-wave can shift energies by hundreds of MeV. In the case of charmed mesons $D,D^*,D_0,D_1$ a spectroscopy of quasi-molecular states may arise consistent with enigmatic charmonium states observed above 4 GeV in $e^+e^-$ annihilation. A possible explanation of $Y(4260)\to ψππ$ and $Y(4360) \to ψ'ππ$ is found. Searches in $D\bar{D}3π$ channels as well as B decays are recommended to test this hypothesis.

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Frank Close, Clark Downum. 2009-06-18. On the possibility of Deeply Bound Hadronic Molecules from single Pion Exchange. https://doi.org/10.1103/physrevlett.102.242003

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