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arXiv 2108.02387hep-ph
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X_1(2900)作为D_1 K分子

X_1(2900) as a D_1 K molecule

Hao Chen, Hong-Rong Qi, Han-Qing Zheng

摘要:

对X(2900)的LHCb的D^- K^+能谱数据进行了分析。动态生成的和显式引入的X_1(2900)都被考虑。结果表明,这两种方法都支持X_1(2900)为棒状{D}_1K分子态的解释,J^{P}=1^-,而等单重态的解释更为有利。本文还讨论了三角形奇异性对X_1(2900)产生的影响,发现它不能解释为纯三角形尖点。

英文摘要:

The analyses of the LHCb data on X(2900) in the D^- K^+ spectrum are performed. Both dynamically generated and explicitly introduced X_1(2900) are considered. The results show that both these two approaches support the interpretation of X_1(2900) as a bar{D}_1 K molecular state, with J^{P}=1^- and an iso-singlet interpretation is much more favorable. The effect of triangle singularity on the production of X_1(2900) is also discussed, and it is found that it cannot be interpreted as a pure triangle cusp.

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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