Analysis of the excited Ω_(c) states as the 1/2^(±) pentaquark states with QCD sum rules  

作　　者：Hui-Juan Wang Zun-Yan Di Zhi-Gang Wang 

机构地区：[1]Department of Physics,North China Electric Power University,Baoding 071003,China [2]School of Nuclear Sicence and Engineering,North China Electric Power University,Beijing 102206,China

出　　处：《Communications in Theoretical Physics》2021年第3期78-93,共16页理论物理通讯（英文版）

基　　金：supported by National Natural Science Foundation,Grant Number 11775079.

摘　　要：We construct both the scalar-diquark-scalar-diquark-antiquark type and axialvector-diquark-axialvector-diquark-antiquark type interpolating currents to study the charmed pentaquark:states suscu with J^(p)=1/2^(±).We employ the QCD sum rules to investigate the masses and pole residues of the charmed pentaquark states by taking into account the vacuum condensates up to dimension 13 in the operator product expansion.Our calculation results indicate that the scalar-diquark-scalar-diquark-antiquark type and axialvector-diquark-axialvector-diquark-antiquark type charmed pentaquark states suscu with J^(p)=1/2^(-) can be possible candidates of the excited states observed in the LHCb collaboration.

关 键 词：charmed baryon states charmed pentaquark states QCD sum rules 

分 类 号：O572.33[理学—粒子物理与原子核物理]