论文标题
$χ_ {\ rm c}（3p）$和$ x（4274）$ resonances及其强和辐射衰减的夸克结构
Quark structure of the $χ_{\rm c}(3P)$ and $X(4274)$ resonances and their strong and radiative decays
论文作者
论文摘要
我们计算$χ_ {\ rm c}（3p）$状态的质量，在耦合通道模型中具有阈值校正。该模型最近应用于$χ_ {\ rm c}（2p）$和$χ_ {\ rm B}（3p）$倍增的属性的描述。我们还计算了$χ_ {\ rm c}（3p）$状态及其辐射过渡的开放式衰减宽度。根据我们的预测，$χ_ {\ rm c}（3p）$状态应由Charmon Core主导，但它们也可能显示出小的中介膜组件。 $ x（4274）$被解释为$ c \ bar c $ $χ_ {\ rm c1}（3p）$状态。需要有关$χ_ {\ rm c}（3p）$多重的其他成员的更多信息，以及对$ x（4274）$ day末期模式的更严格的分析，以提供有关先前共振的夸克结构的进一步指示。
We calculate the masses of $χ_{\rm c}(3P)$ states with threshold corrections in a coupled-channel model. The model was recently applied to the description of the properties of $χ_{\rm c}(2P)$ and $χ_{\rm b}(3P)$ multiplets [Phys.\ Lett.\ B {\bf 789}, 550 (2019)]. We also compute the open-charm strong decay widths of the $χ_{\rm c}(3P)$ states and their radiative transitions. According to our predictions, the $χ_{\rm c}(3P)$ states should be dominated by the charmonium core, but they may also show small meson-meson components. The $X(4274)$ is interpreted as a $c \bar c$ $χ_{\rm c1}(3P)$ state. More informations on the other members of the $χ_{\rm c}(3P)$ multiplet, as well as a more rigorous analysis of the $X(4274)$'s decay modes, are needed to provide further indications on the quark structure of the previous resonance.
