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arXiv 1004.0749hep-phhep-ex
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微扰QCD方法中的$B \to K_0^*(1430) K$衰变

$B \to K_0^*(1430) K$ decays in the perturbative QCD approach

Xin Liu, Zhen-jun Xiao

备注：
7 pages, 2 figures
发表信息：
Commun. Theor. Phys.53:540, 2010
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摘要：

本文用微扰QCD（pQCD）方法计算了$B \to K_0^*(1430) K$衰变的分支比。我们在这两种情况下的标量介子谱进行评估。我们发现：（a）对于分支比$Br(B^+ \to K^+ \bar{K_0^*}(1430)^0)$的首阶pQCD预言在两种情况下都与实验上限符合得很好，而对于其他考虑的$B \to K_0^*(1430) K$衰变模的pQCD预言也被提出并将被LHC实验检验;（b）湮灭贡献在这些考虑的衰变中起着重要作用，例如，对于$B^0 \to {K_0^*}(1430)^\pm {K}^\mp$衰变，它被发现是$(1-4) \times 10^{-6}$。

英文摘要：

In this article, we calculate the branching ratios of $B \to K_0^*(1430) K$ decays by employing the perturbative QCD (pQCD) approach at leading order. We perform the evaluations in the two scenarios for the scalar meson spectrum. We find that (a) the leading order pQCD predictions for the branching ratio $Br(B^+ \to K^+ \bar{K_0^*}(1430)^0)$ which is in good agreement with the experimental upper limit in both scenarios, while the pQCD predictions for other considered $B \to K_0^*(1430) K$ decay modes are also presented and will be tested by the LHC experiments; (b) the annihilation contributions play an important role in these considered decays, for $B^0 \to {K_0^*}(1430)^\pm {K}^\mp$ decays, for example, which are found to be $(1-4) \times 10^{-6}$.

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