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

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

2009-05-16

arxiv.org/abs/0905.2687v2

Phys.Rev.Lett.102:242003,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure. Version accepted to PRL. Equation 3 of v1 of this paper was wrong and has been taken into account in this v

Scientific paper

10.1103/PhysRevLett.102.242003

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 $Y(4260)\to \psi\pi\pi$ and $Y(4360) \to \psi'\pi\pi$ is found. Searches in $D\bar{D}3\pi$ channels as well as B decays are recommended to test this hypothesis.

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