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$B^{+}\to{\bar{D}^0}+D^{+}_{sJ}(2S)$和$B^{+}\to\bar{D}^{0}+D^{+}_{sJ}(1D)$的衰变

The Decays of $B^{+}\to{\bar{D}^0}+D^{+}_{sJ}(2S)$ and $B^{+}\to\bar{D}^{0}+D^{+}_{sJ}(1D)$

Guo-Li Wang, Jin-Mei Zhang, Zhi-Hui Wang

备注：
9 pages, 3 figures
发表信息：
Phys.Lett.B681:326-329,2009
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摘要：

采用朴素因子分解方法和基于Bethe-Salpeter方法的模型相关计算方法，对$B^{+}\to {\bar {D}^0}+D^{+}_{sJ}(2S)$和$B^{+}\to\bar D^{0}+D^{+}_{sJ}(1D)$的衰变进行了分析，得到了分支比分别为$Br({\bar {D}^0}D^{+}_{sJ}(2S))=(0.72\pm0.12)%$和$Br({\bar {D}^0}D^{+}_{sJ}(1D))=(0.027\pm0.007)%$ .衰变的分支比$B^{+}\to {\bar {D}^0}D^{+}_{sJ}(2S)\to {\bar {D}^0}D^0 K^+$与Belle合作组的数据一致，因此我们认为新态$D^{+}_{sJ}(2700)$是第一激发态$D^{+}_{sJ}(2S)$。

英文摘要：

We analyzed the decays of $B^{+}\to {\bar {D}^0}+D^{+}_{sJ}(2S)$ and $B^{+}\to\bar D^{0}+D^{+}_{sJ}(1D)$ by naive factorization method and model dependent calculation based on the Bethe-Salpeter method, the branching ratios are $Br({\bar {D}^0}D^{+}_{sJ}(2S))=(0.72\pm0.12)%$ and $Br({\bar {D}^0}D^{+}_{sJ}(1D))=(0.027\pm0.007)%$. The branching ratio of decay $B^{+}\to {\bar {D}^0}D^{+}_{sJ}(2S)\to {\bar {D}^0}D^0 K^+$ consist with the data of Belle Collaboration, so we conclude that the new state $D^{+}_{sJ}(2700)$ is the first excited state $D^{+}_{sJ}(2S)$.

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