Evidence that the Y(4660) is a f_0(980)psi' bound state

Abstract

We demonstrate that the experimental information currently available for the Y(4660) is consistent with its being a f_0(980)psi' molecule. Possible experimental tests of our hypothesis are presented.

4 pages, 3 figures

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• Weak decays of heavy hadron molecules involving the f0(980)
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• Hadron physics potential of future high-luminosity B-factories at the Upsilon(5S) and above
• Possible tetraquark states in the ${\pi }^{+}{\chi }_{c1}$ invariant mass distribution
• Hidden-flavour four-quark states in the charm and bottom region
• Possible ${\Lambda }_c{\bar{\Lambda }}_c$ molecular states and their productions in nulceon-antinulceon collision
• Search for $J^{PC}=1^{-+}$ exotic state in $e^{+}{e}^{-}$ annihilation
• Compositeness of hadrons, nuclei, and atomic systems
• The spectrum of charmonium in the Resonance-Spectrum Expansion
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• Charmonium decays into ${\Lambda }_c{\bar{\Lambda }}_c$ pair governed by the hadronic loop mechanism
• Two-photon production of $f_0$ and $a_0$ resonances as hadronic molecules composed of two vector mesons
• Three-body strong decays of the $Y(4230)$ via the light-cone QCD sum rules
• Hadronic molecules and multiquark states
• Study of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\omega$ process at center-of-mass energies between 4.0 and 4.6 GeV
• Two-body strong decays of the pseudoscalar hidden-charm tetraquark states via the QCD sum rules
• Search for $e^{+}{e}^{-}\to \varphi {\chi }_{c0}$ and $\varphi {\eta }_{c2}(1D)$ at center-of-mass energies from 4.47 to 4.95 GeV