arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1707.01779hep-phhep-exhep-lat
收藏

建立低洼的双粲重子

Establishing low-lying doubly charmed baryons

Hua-Xing Chen, Qiang Mao, Wei Chen, Xiang Liu, Shi-Lin Zhu

摘要:

利用QCD求和规则系统地研究了$S$波双粲重子。我们的研究结果表明,最近由LHCb观测到的$Ξ_{cc}^{++}$可以很好地确定为$J^P = 1/2^+$的$S$波$Ξ_{cc}$态.我们研究其相关的$Ω_{cc}$状态,其质量被预测为3.7 GeV左右。我们还系统地研究了$P$波双粲重子,其质量被预测为4.1 GeV左右。特别是在这个能区中可能存在多个激发态的双粲重子,我们建议寻找它们来研究强相互作用的精细结构。

英文摘要:

We systematically study the $S$-wave doubly charmed baryons using the method of QCD sum rules. Our results suggest that the $Ξ_{cc}^{++}$ recently observed by LHCb can be well identified as the $S$-wave $Ξ_{cc}$ state of $J^P = 1/2^+$. We study its relevant $Ω_{cc}$ state, whose mass is predicted to be around 3.7 GeV. We also systematically study the $P$-wave doubly charmed baryons, whose masses are predicted to be around 4.1 GeV. Especially, there can be several excited doubly charmed baryons in this energy region, and we suggest to search for them in order to study the fine structure of the strong interaction.

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。

↑