Contributions of the kaon pair from $\rho (770)$ for the three-body decays $B\to DK\bar{K}$

Abstract

We study the contributions of the kaon pair originating from the resonance $\rho (770)$ for the three-body decays $B\to DK\bar{K}$ by employing the perturbative QCD approach. According to the predictions in this work, the contributions from the intermediate state $\rho (770{)}^0$ are relatively small for the three-body decays such as $B^0\to {\bar{D}}^0{K}^{+}{K}^{-}$, $B_s^0\to {\bar{D}}^0{K}^{+}{K}^{-}$, and $B^{+}\to D_s^{+}{K}^{+}{K}^{-}$, while about $20\%$ of the total three-body branching fraction for $B^{+}\to {\bar{D}}^0{K}^{+}{\bar{K}}^0$ could possibly come from the subprocess $\rho (770{)}^{+}\to K^{+}{\bar{K}}^0$. We also estimate the branching fractions for $\rho (770{)}^{\pm }$ decay into the kaon pair to be about $1\%$, and that for the neutral $\rho (770)$ decay into $K^{+}{K}^{-}$ or $K^0{\bar{K}}^0$ to be about $0.5\%$, which will be tested by future experiments.

12 pages, 3 figures and 4 tables. Some modifications, matching the published version

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Cited by in corpus (9)

• Four-body decays $B_{(s)}\to (K\pi {)}_{S/P}(K\pi {)}_{S/P}$ in the perturbative QCD approach
• Contributions for the kaon pair from $\rho (770)$, $\omega (782)$ and their excited states in the $B\to K\bar{K}h$ decays
• Global determination of two-meson distribution amplitudes from three-body $B$ decays in the perturbative QCD approach
• Resonances $\rho (1450{)}^{+}$ and $\rho (1700{)}^{+}$ in $B\to DKK$ decays
• Low-mass enhancement of kaon pairs in $B^{+}\to {\bar{D}}^{(\ast )0}{K}^{+}{\bar{K}}^0$ and $B^0\to D^{(\ast )-}{K}^{+}{\bar{K}}^0$ decays
• Contributions of $\rho (770,1450)\to \omega \pi$ for the Cabibbo-favored $D\to h\omega \pi$ decays
• Contributions of the subprocess $K_0^{\ast }(1430)\to K{\eta }^{\prime }$ in the charmless three-body $B$ meson decays
• The virtual contributions from $K^{\ast }$ in the $B\to K^{\ast }\pi h$ and $B\to K\rho h$ decays
• Resonance contributions from ${\chi }_{c0}$ in the charmless three-body hadronic $B$ meson decays