论文标题
$ x_0（2866）$作为$ d^* \ bar {k}^* $ $ j^p = 0^+$状态和相关$ 1^+，2^+$状态的分子图片
Molecular picture for the $X_0(2866)$ as a $D^* \bar{K}^*$ $J^P=0^+$ state and related $1^+,2^+$ states
论文作者
论文摘要
我们回想起了十年前对$ j^p = 0^+$的界限的预测，$ i = 0 $的$ d^* \ bar {k}^* $ system，显然是异国情调的，我们将其与最近的LHCB实验中报告的$ x_0（2866）$状态相关联。微调参数以精确地重现$ x_0（2866）$状态的质量和宽度，我们报告了另外两个来自同一交互的状态，一个是$ 1^+$，另一个则为$ 2^+$。出于奇偶校验的原因，$ 1^+$状态无法在$ d \ bar {k} $衰减中观察到，我们建议在$ d^*\ bar {k} $ spectrum中观察它。另一方面，可以在$ d \ bar {k} $衰减中观察到$ 2^+$状态，但是目前的实验在其质量区域的统计数据太小，无法提出任何索赔。我们注意到，具有更多统计信息的$ d^*\ bar {k} $ spectrum和$ d \ bar {k} $的测量应带来有关$ x_0（2866）$的性质和可以观察到的相关的重要信息。
We recall the predictions made ten years ago about a bound state of $J^P=0^+$ in $I=0 $ of the $D^* \bar{K}^*$ system, which is manifestly exotic, and we associate it to the $X_0(2866)$ state reported in the recent LHCb experiment. Fine tuning the parameters to reproduce exactly the mass and width of the $X_0(2866)$ state, we report two more states stemming from the same interaction, one with $1^+$ and the other with $2^+$. For reasons of parity, the $1^+$ state cannot be observed in $D\bar{K}$ decay, and we suggest to observe it in the $D^*\bar{K}$ spectrum. On the other hand, the $2^+$ state can be observed in $D \bar{K}$ decay but the present experiment has too small statistics in the region of its mass to make any claim. We note that measurements of the $D^*\bar{K}$ spectrum and of the $D \bar{K}$ with more statistics should bring important information concerning the nature of the $X_0(2866)$ and related ones that could be observed.
