应兰州大学核科学与技术学院、稀有同位素前沿科学中心邀请，北京航空航天大学杨慧琳博士将于2024年6月20日来校进行学术交流并作报告。

 

       报告题目：Application of QCD sum rules to singly heavy baryons

       报告时间：2024年6月20日（星期四）10：00-12：00   

       报告地点：兰州大学现物楼214室

       腾讯会议：667-810-326

 

       欢迎广大师生参加！

 

【报告摘要】

       The methods of QCD sum rules and light-cone sum rules within the framework of heavy quark effective theory have been widely applied to study the singly heavy baryons, and especially, we have applied these methods to predict the $1P$ and $2P$-wave charmed baryons. Our results suggest that the $\Lambda_c(2910)+$, $\Lambda_c(2940)^+$ and $\Xi_c(3123)^+$ can be well interpreted as the $2P$-wave charmed baryon of $J^P=1/2^-$ and $3/2^-$, belonging to the $SU(3)$ flavor $\mathbf{\bar 3}_F$ representation. Moreover, the $\Xi_c(3123)^+$ possesses a partner state characterized by $J^P=1/2^-$, denoted as $\Xi_c(1/2^-,2P)$. All these baryons are explained as the P-wave charmed baryons of the ρ-mode, where the orbital excitation is between the two light quarks. However, the existence of this mode is still controversial, so their experimental searches can verify both our approach and the existence of the ρ-mode, which can significantly improve our understanding on the internal structure of hadrons.

【报告人简介】

       杨慧敏，毕业于北京航空航天大学，2023年获得博士学位。曾在北京大学高能物理中心做博士后。她的主要研究兴趣集中在强子物理学，研究重子的质谱和衰变宽度等领域。

 

                                                                                                                                                                   核科学与技术学院

稀有同位素前沿科学中心

2024年6月18日