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- W2100967306 abstract "The amplitudes for decays of the type $B_{d,s} to D_{s,d} D_{s,d}$, have no factorizable contributions, while $B_{d,s} to D_{s,d} D^*_{s,d}$, and $B_{d,s} to D^*_{s,d} D^*_{s,d}$ have relatively small factorizable contributions through the annihilation mechanism. The dominant contributions to the decay amplitudes arise from chiral loop contributions and tree level amplitudes which can be obtained in terms of soft gluon emissions forming a gluon condensate. We predict that the branching ratios for the processes $bar B^0_d to D_s^+ D_s^-$, $bar B^0_d to D_s^{+*} D_s^- $ and $bar B^0_d to D_s^+ D_s^{-*}$ are all of order $(2- 3) times 10^{-4}$, while $bar B^0_s to D_d^+ D_d^-$, $bar B^0_s to D_d^{+*} D_d^- $ and $bar B^0_s to D_d^+ D_d^{-*}$ are of order $(4- 7) times 10^{-3}$. We obtain branching ratios for two $D^*$'s in the final state of order two times bigger." @default.
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- W2100967306 date "2005-07-01" @default.
- W2100967306 modified "2023-09-27" @default.
- W2100967306 title "Color suppressed contributions to the decay modes $B_{d,s} to D_{s,d} D_{s,d} $ , $B_{d,s} to D_{s,d} D^*_{s,d}$ , and $B_{d,s} to D^*_{s,d} D^*_{s,d} $" @default.
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- W2100967306 doi "https://doi.org/10.1140/epjc/s2005-02243-8" @default.
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