The decay Upsilon -> D- anti-B0 Ds+ is predicted to show a peak near 7415-7425 MeV from a spin-2 tetraquark molecule, plus a threshold dip.
We can now construct the Feynman diagrams representing the dom inant contributions to the process Υ →D− ¯B0D+ s , as illustrated in Fig
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$T_{bc\bar s}$ states in the process $\Upsilon \to D^{-} \bar B^{0} D_s^{+}$
The decay Upsilon -> D- anti-B0 Ds+ is predicted to show a peak near 7415-7425 MeV from a spin-2 tetraquark molecule, plus a threshold dip.