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arXiv 2004.12415hep-ph
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类氘态$d_{NΩ}$的衰变性质

Towards the decay properties of deuteron-like state $d_{NΩ}$

Cheng-Jian Xiao, Yu-Bing Dong, Thomas Gutsche, Valery E. Lyubovitskij, Dian-Yong Chen

摘要:

最近的格点量子色动力学计算表明,可能存在一种类似于氘核的具有小结合能的$d_{NΩ}$重子态。在这项工作中,我们提出了一个强子分子的方法来研究这种奇异态的动力学性质。我们用唯象的拉格朗日方法来描述$d_{NΩ}$态与其组分的耦合以及衰变成常规强子$d_{NΩ} \to ΛΞ$和$d_{NΩ} \to ΣΞ$。预测的衰变率的总和是在几百千电子伏的范围内。此外,我们发现,$d_{NΩ} \to ΛΞ$模式是占主导地位的,最好在未来的RHIC实验中寻找。

英文摘要:

Recent lattice QCD calculations showed that a $d_{NΩ}$ dibaryon state similar to the deuteron with small binding energy may exist. In this work we propose a hadronic molecular approach to study the dynamical properties of this exotic state. We use a phenomenological Lagrangian approach to describe the coupling of the $d_{NΩ}$ state to its constituents and the decays into conventional hadrons, $d_{NΩ} \to ΛΞ$ and $d_{NΩ} \to ΣΞ$. Predictions for the sum of the decay rates are in the range of a few hundred keV. In addition, we find that the $d_{NΩ} \to ΛΞ$ mode is dominant, preferably searched for in a future RHIC experiment.

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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