论文标题
观察$ j^{p} = 2^{+} $ $ x_ {0}（2866）$的$ j^{p} = 2^{+} $ in $ b^+\ to d^{+} d^{ - }
Method to observe the $J^{P}=2^{+}$ partner of the $X_{0}(2866)$ in the $B^+ \to D^{+} D^{-} K^{+} $ reaction
论文作者
论文摘要
We propose a method based on the moments of the $D^{-} K^{+}$ mass distribution in the $B^+ \to D^{+} D^{-} K^{+} $ decay to disentangle the contribution of the $ 2^{+} $ state, partner of $X_{0}(2900)$ in the $ \bar D^{*} k^{*} $图片此共振。其中一些瞬间显示了$ x_ {1}（2900）$和$ x_ {0}（2900）$的干扰模式，并带有$ 2^{+} $状态，该$ 2^{+} $ state提供了比单独的$ 2^{+} $ resonance更清晰的信号。从当前数据中构造这些幅度很容易实现，基于这些数据，我们表明，即使使用当前统计数据，也应看到该共振的明显信号。
We propose a method based on the moments of the $D^{-} K^{+}$ mass distribution in the $B^+ \to D^{+} D^{-} K^{+} $ decay to disentangle the contribution of the $ 2^{+} $ state, partner of $X_{0}(2900)$ in the $ \bar D^{*} K^{*}$ picture for this resonance. Some of these moments show the interference patterns of the $X_{1}(2900)$ and $X_{0}(2900)$ with the $ 2^{+} $ state, which provide a clearer signal of the $ 2^{+} $ resonance than the $ 2^{+} $ signal alone. The construction of these magnitudes from present data is easy to implement, and based on these data we show that clear signals for that resonance should be seen even with the present statistics.
