arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1706.09401hep-ph
收藏

用QCD求和规则重新指定新激发态$Ω_c$

Revisit assignments of the new excited $Ω_c$ states with QCD sum rules

Zhi-Gang Wang, Xing-Ning Wei, Ze-Hui Yan

备注：
19 pages, 22 figures. arXiv admin note: text overlap with arXiv:1705.07745
发表信息：
Eur. Phys. J. C77 (2017) 832
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

本文区分了正宇称和负宇称$Ω_c$态的贡献，用QCD求和规则一致地研究了自旋为$J=\frac{1}{2}$和$\frac{3}{2}$的1S，1P，2S和2P $Ω_c$态的质量和极残基，并重新讨论了新的窄激发$Ω_c^0$态的分配.预测支持将$Ω_c(3000)$分配为具有$J^P={\frac{1}{2}}^-$的1P $Ω_c$状态，将$Ω_c(3090)$分配为具有$J^P={\frac{3}{2}}^-$的1P $Ω_c$状态或具有$J^P={\frac{1}{2}}^+$的2S $Ω_c$状态，以及将$Ω_c(3119)$分配为具有$J^P={\frac{3}{2}}^+$的2S $Ω_c$状态。

英文摘要：

In this article, we distinguish the contributions of the positive parity and negative parity $Ω_c$ states, study the masses and pole residues of the 1S, 1P, 2S and 2P $Ω_c$ states with the spin $J=\frac{1}{2}$ and $\frac{3}{2}$ using the QCD sum rules in a consistent way, and revisit the assignments of the new narrow excited $Ω_c^0$ states. The predictions support assigning the $Ω_c(3000)$ to be the 1P $Ω_c$ state with $J^P={\frac{1}{2}}^-$, assigning the $Ω_c(3090)$ to be the 1P $Ω_c$ state with $J^P={\frac{3}{2}}^-$ or the 2S $Ω_c$ state with $J^P={\frac{1}{2}}^+$, and assigning $Ω_c(3119)$ to be the 2S $Ω_c$ state with $J^P={\frac{3}{2}}^+$.

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。

↑