arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0811.0918hep-ph
收藏

关于$π_2的性质(1880)

On the nature of the $π_2(1880)

De-Min Li, Shan Zhou

摘要:

分别在$^3P_0$模型和通量管模型中研究了$π_2(1880)$作为$2 ^1D_2$夸克-反夸克态的强衰变.两种模型的结果相似。发现常规$2 ^1D_2$介子和$2^{-+}$光杂化介子的衰变模式有很大的不同,并且$π_2(1880)$是常规$2 ^1D_2$介子而不是$2^{-+}$光杂化介子的实验证据是一致的.讨论了$π_2(1880)$是传统$q\bar{q}$和混合物的混合物的可能性。

英文摘要:

The strong decays of the $π_2(1880)$ as the $2 ^1D_2$ quark-antiquark state are investigated in the $^3P_0$ model and the flux-tube model, respectively. The results are similar in the two models. It is found that the decay patterns of the conventional $2 ^1D_2$ meson and the $2^{-+}$ light hybrid are very different, and the experimental evidence for the $π_2(1880)$ is consistent with it being the conventional $2 ^1D_2$ meson rather than the $2^{-+}$ light hybrid. The possibility of the $π_2(1880)$ being a mixture of the conventional $q\bar{q}$ and the hybrid is discussed.

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。

↑