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29 March 2024
 
  » arxiv » 2009.11619

 Article overview


Prediction of possible $DK_1$ bound states
Xiang-Kun Dong ; Bing-Song Zou ;
Date 24 Sep 2020
AbstractStimulated by recent experimental observation of $X_1(2900)$ just below the $ar D_1K$ threshold, we extend our previous study of $ar D_1D$ S-wave bound state by vector meson exchange to $ar D_1K$ system as well as similar $ar DK_1$, $D_1K$ 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 $ar DK_1$ becomes further less attractive, the potential between $ar D_1 K$ is the weakest, definitely too weak to form any bound state, which excludes the recently observed $X_1(2900)$ to be a $ar D_1 K$ bound state. We also give the decay properties of the predicted $D K_1$ bound states.
Source arXiv, 2009.11619
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