论文标题
$ x（3960）$在$ d_ {s}^{+} d_ {s}^{ - } $中as $ x（3930）$ state在$ d^{+} d^{ - } $中看到的$ x（3930）$状态
The $X(3960)$ seen in $D_{s}^{+} D_{s}^{-}$ as the $X(3930)$ state seen in $ D^{+} D^{-} $
论文作者
论文摘要
我们执行$ d \ bar {d} $，$ d_ {s} \ bar {d} _ {s} $耦合频道的相互作用的计算，找到两个绑定的状态，一个耦合到$ d \ bar {d} $，另一个在更高的能量到$ d _}的速度上， d_ {s}^{ - } $。我们在$ d^{+} d^{ - } $质量分布中以$ d^{+} $质量分布在$ b^+\ to d^{+} d^{ - } k^{+} $衰减中的$ x_ {0}（3930）$识别后一个状态，并显示出$ d^{+} $ d_}质量分布接近阈值，这与LHCB的最新观察结果兼容，$ b^+\至d_ {s}^{+} d_ {s}^{ - }^{ - } k^{+} $衰减已被确定为新状态，$ x_ {0}（3960）$。
We perform a calculation of the interaction of the $ D \bar{D} $, $ D_{s} \bar{D}_{s} $ coupled channels and find two bound states, one coupling to $ D \bar{D} $ and another one at higher energies coupling mostly to $D_{s}^{+} D_{s}^{-}$. We identify this latter state with the $X_{0}(3930)$ seen in the $D^{+} D^{-}$ mass distribution in the $B^+ \to D^{+} D^{-} K^{+} $ decay, and also show that it produces an enhancement of the $D_{s}^{+} D_{s}^{-}$ mass distribution close to threshold which is compatible with the LHCb recent observation in the $B^+ \to D_{s}^{+} D_{s}^{-} K^{+} $ decay which has been identified as a new state, $X_{0}(3960)$.
