An unquenched mechanism with virtual charmed mesons mediating one-boson exchange reproduces the observed di-J/ψ invariant mass spectrum.
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The 1S states of bb bbar cbar, cc cbar bbar, bb cbar cbar, and bc bbar cbar tetraquarks are predicted to have masses in 16.06-16.14, 9.65-9.74, 12.89-12.94, and 12.75-12.99 GeV with narrow fall-apart decay widths from tenths to several MeV.
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Discovering an Unquenched Dynamics Mechanism for Charmonium Scattering
An unquenched mechanism with virtual charmed mesons mediating one-boson exchange reproduces the observed di-J/ψ invariant mass spectrum.
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All-heavy tetraquarks with different flavors
The 1S states of bb bbar cbar, cc cbar bbar, bb cbar cbar, and bc bbar cbar tetraquarks are predicted to have masses in 16.06-16.14, 9.65-9.74, 12.89-12.94, and 12.75-12.99 GeV with narrow fall-apart decay widths from tenths to several MeV.