论文标题
从分子角度来看$ p_ {cs} $状态的新外观
A new look at the $P_{cs}$ states from a molecular perspective
论文作者
论文摘要
我们查看从$ \ bar d^{（*）}ξ^{（\ prime*）} _ c $耦合通道中生成的$ p_ {cs} $状态。我们考虑伪内calar-baryon $（{\ frac12}^+，{\ frac32}^+）$ and vector-baryon $（{\ frac12}^+，{\ frac32}^+）$，并找到$ 10 $ resonant couplant couplanant couplant to $ reseonant to $ coupl to $ \ coupl d. ξ_c，\ bar dξ'_c，\ bar d^*ξ'_c，\ bar ddξ^* _ c $和$ \ bar d^*ξξ^* _ c $。这项工作的一个新颖方面是认识到，$ \ bar dξ_c，\ bard_sλ_c$或$ \ bar d^*ξ_c，\ bar d^* _sλ_c$ nandles频道具有强大的过渡潜力，可以协作，以产生比相应的状态$ \ bardσ_c，\ bardαc$ \ bardλ_c$ \ bardλ_c$ \ bardλ_c$ \ bardλ_c， d^*λ_c$出现在奇怪的$ p_ {c} $状态中，因为在后一种情况下，这些通道之间的过渡势为零。在$ \ bard松\ \ bar d^*ξ_c$配对中获得的额外吸引力排除了这些渠道与$ p_ {cs}（4338）$和$ p_ {cs}（4459）$状态的关联。然后，我们发现$ p_ {cs}（4338）$状态耦合的自然关联主要是$ \ bar d^*ξ_c$，而$ p_ {cs}（4459）$与该州相关联，发现大多将耦合到$ \ bar d en en en en en cc $。像其他分子图片一样出现了另外四个状态，其中一些状态在自旋中退化。计算不同的旋转状态，我们发现$ 10美元的状态，我们希望在不久的将来可以观察到这一点。
We have a look at the $P_{cs}$ states generated from the interaction of $\bar D^{(*)} Ξ^{(\prime*)}_c$ coupled channels. We consider the blocks of pseudoscalar-baryon $({\frac12}^+, {\frac32}^+)$ and vector-baryon $({\frac12}^+, {\frac32}^+)$, and find $10$ resonant states coupling mostly to $\bar D Ξ_c, \bar D^* Ξ_c,\bar D Ξ'_c, \bar D^* Ξ'_c,\bar D Ξ^*_c$ and $\bar D^* Ξ^*_c$. A novel aspect of the work is the realization that the $\bar D Ξ_c,\bar D_sΛ_c$ or $\bar D^* Ξ_c,\bar D^*_sΛ_c$ channels, with a strong transition potential, collaborate to produce a larger attraction than the corresponding states $\bar D Σ_c,\bar DΛ_c$ or $\bar D^* Σ_c,\bar D^*Λ_c$ appearing in the generation of the strangenessless $P_{c}$ states, since in the latter case the transition potential between those channels is zero. The extra attraction obtained in the $\bar D Ξ_c,\bar D^* Ξ_c$ pairs preclude the association of these channels to the $P_{cs}(4338)$ and $P_{cs}(4459)$ states respectively. Then we find a natural association of the $P_{cs}(4338)$ state coupling mostly to $\bar D^* Ξ_c$ while the $P_{cs}(4459)$ is associated to the state found that couples mostly to $\bar D Ξ'_c$. Four more states appear, like in other molecular pictures, and some of the states are degenerate in spin. Counting different spin states we find $10$ states, which we hope can be observed in the near future.
