论文标题
charmoniumlium的可能性$ x（3915）$ as $χ_{c0}（2p）$ state
Possibility of charmoniumlike state $X(3915)$ as $χ_{c0}(2P)$ state
论文作者
论文摘要
在这项工作中，我们认真讨论$ x（3915）$是否可以视为$χ_{C0}（2p）$状态。基于未夸大的夸克模型，我们给出了$χ_{cj}（2p）$状态的质谱，其中计算中没有免费输入参数。我们的结果表明，$χ_{C0}（2p）$和$χ_{C2}（2p）$之间的质量差距可以达到13 MEV，这可以重现$ z（3930）$ x（3930）$ x（3915）$之间的质量差。此外，计算出$χ_{C0}（2p）$和$χ_{C2}（2p）$的质量分别与$ x（3915）$和$ z（3930）$的实验值一致。此外，将质谱分析用于支持$ x（3915）$作为$χ_{C0}（2p）$，我们还使用相同框架计算$χ_{C0}（2p）$的宽度，这也与$ x（3915）$的实验数据一致。因此，Charmoniumlium的状态$ x（3915）$ as $χ_{C0}（2p）$状态的可能性得到了进一步执行。
In this work, we seriously discuss whether $X(3915)$ can be treated as a $χ_{c0}(2P)$ state. Based on an unquenched quark model, we give the mass spectrum of the $χ_{cJ}(2P)$ states, where there are no free input parameters in our calculation. Our result shows that the mass gap between $χ_{c0}(2P)$ and $χ_{c2}(2P)$ can reach 13 MeV, which can reproduce the mass difference between $Z(3930)$ and $X(3915)$. Additionally, the calculated masses of $χ_{c0}(2P)$ and $χ_{c2}(2P)$ are consistent with experimental values of $X(3915)$ and $Z(3930)$, respectively. Besides, giving the mass spectrum analysis to support $X(3915)$ as $χ_{c0}(2P)$, we also calculate the width of $χ_{c0}(2P)$ with the same framework, which is also consistent with the experimental data of $X(3915)$. Thus, the possibility of charmoniumlike state $X(3915)$ as $χ_{c0}(2P)$ state is further enforced.
