论文标题
在新观察到的$ x（3960）$上的charmoniumliike共振解释
Charmoniumlike resonant explanation on the newly observed $X(3960)$
论文作者
论文摘要
通过观察到LHCB合作观察到的新$ x（3960）$的观察，我们采用了单玻色旋转模型，并考虑$ s-d $ wave混合效果来研究$ d_s \ bar {d} _s/d} _s/d^*^*\ bar bar {d} $ i（j^{pc}）= 0（0^{++}）$。在产生了该耦合通道系统的相移后，我们的结果表明，可以存在炭子样的共振，其获得的质量和宽度都可以与新观察到的$ x（3960）$的实验数据匹配。我们还发现，$ d^*\ bar {d}^*$系统在新观察到的$ x（3960）$的形成中起着重要的作用，作为charmoniumliumike的共振，而$ d_s^*\ bar {d} _ss^*$系统为共振宽度做出了重大贡献。作为副产品，我们对$ d^*\ bar {d}^*/d_s \ bar {d} _s^*/d_s^*/d_s^*\ bar {d} _S _S^*$与$ i（j^{pc}）= 0（我们可以预测a的事物aft aft Incluction Prectuction Profections） $ d_s \ bar {d} _s^*$分子带有$ 1^{+ - } $和$ d_s^*\ bar {d} _s^*$分子，带有$ 1^{+ - } $。它们的宽度分别大约是几十个MEV。对这两个可能的炭样分子候选者进行实验性搜索可能有助于验证我们的建议。
Stimulated by the observation of the newly $X(3960)$ observed by the LHCb collaboration, we adopt the one-boson-exchange model and consider the $S-D$ wave mixing effects to study the $D_s\bar{D}_s/D^*\bar{D}^*/D_s^*\bar{D}_s^*$ interactions with $I(J^{PC})=0(0^{++})$. After producing the phase shifts of this coupled channel systems, our results show that there can exist a charmoniumlike resonance, whose obtained mass and width can both well match with the experimental data of the newly observed $X(3960)$. We also find that the $D^*\bar{D}^*$ system plays an important role in the formation of the newly observed $X(3960)$ as a charmoniumlike resonance, and the $D_s^*\bar{D}_s^*$ system makes a significant contribution to the resonant width. As a byproduct, we perform a coupled channel analysis on the $D^*\bar{D}^*/D_s\bar{D}_s^*/D_s^*\bar{D}_s^*$ interactions with $I(J^{PC})=0(1^{+-})$, our results can predict the existence of the $D_s\bar{D}_s^*$ molecule with $1^{+-}$ and the $D_s^*\bar{D}_s^*$ molecule with $1^{+-}$. Their widths are around several and several to several tens MeV, respectively. Experimental searches for these two possible charmoniumlike molecular candidates can be helpful to verify our proposal.
