论文标题
预测可能的$ dk_1 $绑定状态
Prediction of possible $DK_1$ bound states
论文作者
论文摘要
通过最近的实验观察$ x_1（2900）$的刺激，恰好低于$ \ bar d_1k $阈值，我们将先前对$ \ bar d_1d $ s-s-wave bunde的研究扩展到vector meson Exchange的限制状态到$ \ bar d_1k $ system我们发现，$ d k_1 $的潜力具有吸引力，足够强大，以$ dk_1（1270）$和3240 meV形成质量约为3110 MEV的束缚状态，$ dk_1（1400）$。 $ d_1 k $也很有吸引力，但较弱，几乎足以形成约束状态。尽管$ \ bar dk_1 $变得更加吸引人，但$ \ bar d_1 k $之间的潜力是最弱的，绝对太弱，无法形成任何界限，这不包括最近观察到的$ x_1（2900）$，即$ \ bar d_1 k $绑定的状态。我们还提供了预测的$ d k_1 $绑定状态的衰减属性。
Stimulated by recent experimental observation of $X_1(2900)$ just below the $\bar D_1K$ threshold, we extend our previous study of $\bar D_1D$ S-wave bound state by vector meson exchange to $\bar D_1K$ system as well as similar $\bar DK_1$, $D_1K$ and $DK_1$ systems to look for possible bound states. We find that the potential of $D K_1$ is attractive and strong enough to form bound states with mass around 3110 MeV for $DK_1(1270)$ and 3240 MeV for $DK_1(1400)$. $D_1 K$ is also attractive but weaker, hardly enough to form bound states. While $\bar DK_1$ becomes further less attractive, the potential between $\bar D_1 K$ is the weakest, definitely too weak to form any bound state, which excludes the recently observed $X_1(2900)$ to be a $\bar D_1 K$ bound state. We also give the decay properties of the predicted $D K_1$ bound states.
