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arXiv 1707.03802hep-phhep-exhep-latnucl-th
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外来双重魅力Ds0 *（2317）D和Ds1 *（2460）D* 分子

Exotic Doubly Charmed Ds0*(2317)D and Ds1*(2460)D* Molecules

Mario Sanchez Sanchez, Li-Sheng Geng, Jun-Xu Lu, Tetsuo Hyodo, Manuel Pavon Valderrama

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6 Pages, 1 Figure
发表信息：
Phys. Rev. D 98, 054001 (2018)
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摘要：

由于$D_{s0}^*(2317) D$（$D_{s1}^*$）和$D$（$D^*$）介子的内禀宇称相反，$D_{s0}^*(2317) D$和$D_{s1}^*(2460) D^*$重介子系统可以交换出一个在S波中发射的K介子.由于$D_{s0}^*$（$D_{s1}^*$）和$D$（$D^*$）介子的质量差异，K介子交换势的范围将明显长于预期，对应于大约$200\,{\rm MeV}$的有效质量。这种势将非常强：相互作用的强度与$(m_{D_{s0}} - m_D)^2 / f_π^2$和$(m_{D_{s1}} - m_{D^*})^2 / f_π^2$成正比。这种范围和强度的组合几乎保证了分别与$J^P = 0^{-}$和$J^P = 0^{-}, 2^{-}$的$D_{s0}^*(2317) D$和$D_{s1}^*(2460) D^*$束缚态的存在。具体的计算表明$5-15\,{\rm MeV}$的结合能独立于$J^P$。$D_{s0}^*(2317) D$和$D_{s1}^*(2460) D^*$分子具有明显的奇异味道量子数：$C=2$、$S=1$和$I=1/2$。我们预期底部对应物的存在由$B B_{s0}$和$B^* B_{s1}^*$介子组成，它们将被束缚得更紧，并且具有更丰富的光谱，可能包括浅P波态和激发S波态。

英文摘要：

The $D_{s0}^*(2317) D$ and $D_{s1}^*(2460) D^*$ heavy meson systems can exchange a kaon that is emitted in S-wave owing to the opposite intrinsic parity of the $D_{s0}^*$($D_{s1}^*$) and $D$($D^*$) mesons. As a consequence of the mass difference of the $D_{s0}^*$($D_{s1}^*$) and $D$($D^*$) mesons, the range of the kaon exchange potential will be significantly longer than expected, corresponding to an effective mass of about $200\,{\rm MeV}$. The potential will be very strong: the strength of the interaction is proportional to $(m_{D_{s0}} - m_D)^2 / f_π^2$ and $(m_{D_{s1}} - m_{D^*})^2 / f_π^2$. This combination of range and strength almost guarantees the existence of $D_{s0}^*(2317) D$ and $D_{s1}^*(2460) D^*$ bound states with $J^P = 0^{-}$ and $J^P = 0^{-}, 2^{-}$ respectively. Concrete calculations indicate a binding energy of $5-15\,{\rm MeV}$ independently of $J^P$. The $D_{s0}^*(2317) D$ and $D_{s1}^*(2460) D^*$ molecules have manifestly exotic flavour quantum numbers: $C=2$, $S=1$ and $I=1/2$. We expect the existence of bottom counterparts composed of the $B B_{s0}$ and $B^* B_{s1}^*$ mesons, which will be more bound and have a richer spectrum that might include a shallow P-wave state and an excited S-wave state.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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