Isospin eigenstates of the color singlet-singlet-type pentaquark states

作     者：Xiu-Wu Wang Zhi-Gang Wang Guo-Liang Yu Qi Xin 

作者机构：Department of PhysicsNorth China Electric Power UniversityBaoding 071003China School of Nuclear Science and EngineeringNorth China Electric Power UniversityBeijing 102206China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2022年第65卷第9期

页      面：44-51页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.12175068) the Youth Foundation of North China Electric Power University(NCEPU)(Grant No.93209703) 

主　　题：pentaquark states hadronic molecule QCD sum rules 

摘      要：In this study,we constructed color singlet-singlet-type five-quark currents with isospins(I,I_(3))=(1/2,1/2)and(3/2,1/2)unambiguously to explore theDΣ_(c),DΣ^(∗)_(c),¯D∗Σc,andD^(∗)Σ^(∗)_(c)pentaquark states via the quantum chromodynamics sum rules for the first time,where¯D,Σc,···represent the color singlet clusters with the same quantum numbers as the corresponding physical mesons or *** numerical results support assigning P_(c)(4312),P_(c)(4380),P_(c)(4440),and P_(c)(4457)as theDΣ_(c),DΣ^(∗)_(c),¯D∗Σc,andD^(∗)Σ^(∗)_(c)pentaquark states,respectively,with the isospin I=1/*** correspondingDΣ_(c),DΣ^(∗)_(c),¯D∗Σc,andD^(∗)Σ^(∗)_(c)pentaquark states with the isospin I=3/2 have slightly larger *** observations of the high pentaquark candidates in the J=Δinvariant mass spectrum would shed light on the nature of the P_(c)states and contribute in distinguishing the scenarios of the color antitriplet-antitriplet-antitriplet-type and color singlet-singlet-type pentaquark states.