论文标题
共鸣$ ϕ（1020）$和$ ϕ（1680）$贡献三体衰减$ b^+ \ to d_s^+ k \ bar k $
Resonances $ϕ(1020)$ and $ϕ(1680)$ contributions for the three-body decays $B^+ \to D_s^+K\bar K$
论文作者
论文摘要
我们研究了三体衰减的共鸣$ ϕ（1020）$和$ ϕ（1680）$贡献$ b^+ \ to d_s^+ k \ bar k \ bar k $在扰动QCD方法中。 $ b^+ \至d_s^+ ϕ（1020）\ to d_s^+ k^+ k^ - $和$ b^+ \ to d_s^+ ϕ（1020）\ to d_s^+ k^0 \ bar {k}^0 $的分支比$（1.02^{+0.19} _ { - 0.13}）\ times 10^{ - 7} $。带有$ ϕ（1680）$的衰减$ b^+\ to d_s^+ϕ（1680）$ $ k^+k^ - $ k^ - $ k^ - $ k^0 \ bar {k}^0 $，分支分数$（6.94^{+1.83} {+1.83} $ b^+ \ to d_s^+ ϕ（1020）\ to d_s^+ k^+ k^ - $。
We study the resonances $ϕ(1020)$ and $ϕ(1680)$ contributions for the three-body decays $B^+ \to D_s^+K\bar K$ in the perturbative QCD approach. The branching ratios for $B^+ \to D_s^+ϕ(1020) \to D_s^+ K^+K^-$ and $B^+ \to D_s^+ϕ(1020) \to D_s^+ K^0\bar{K}^0$ are predicted to be $(1.53\pm0.23) \times 10^{-7}$ and $(1.02^{+0.19}_{-0.13} )\times 10^{-7}$, respectively. The decay $B^+ \to D_s^+ϕ(1680)$ with $ϕ(1680)$ decays into $K^+K^-$ or $K^0\bar{K}^0$, has the branching fraction $(6.94^{+1.83}_{-2.02})\times 10^{-9}$, which is about $5\%$ of the result for $B^+ \to D_s^+ϕ(1020) \to D_s^+ K^+K^-$.
