论文标题
美元
$D^{\pm}D^{*\mp}$ Hadronic Atom as a Key to Revealing the $X(3872)$ Mystery
论文作者
论文摘要
$ x（3872）$，其质量与$ d^0 \ bar d^{*0} $阈值相吻合，是最扩展的强子对象。自2003年发现以来，关于其内部结构的辩论从未停止。我们提出了一个新对象，即$ x $ atom，即$ d^\ pm d^{*\ mp} $具有正电荷均衡的复合系统，质量为$（3879.89 \ pm0.07）$ MEV，主要是由于库仑力。我们表明，$ x $ ATOM的无空信号可用于对$ x（3872）$的结合能量施加下限。从当前的$ x（3872）$属性的知识中，相对于$ x $ x $ x $ x（3872）$的$ b $衰减中的$ x $ ATOM的生产率至少应为$ 1 \ times10^{ - 3} $。将通过研究$ x $ ATOM获得$ X（3872）$的新见解。
The $X(3872)$, whose mass coincides with the $D^0\bar D^{*0}$ threshold, is the most extended hadron object. Since its discovery in 2003, debates have never stopped regarding its internal structure. We propose a new object, the $X$ atom, which is the $D^\pm D^{*\mp}$ composite system with positive charge parity and a mass of $(3879.89\pm0.07)$ MeV, formed mainly due to the Coulomb force. We show that a null signal of the $X$ atom can be used to put a lower limit on the binding energy of the $X(3872)$. From the current knowledge of the $X(3872)$ properties, the production rate for the $X$ atom relative to the $X(3872)$ in $B$ decays and at hadron colliders should be at least $1\times10^{-3}$. New insights into the $X(3872)$ will be obtained through studying the $X$ atom.
