Properties of the P_(c)(4312)pentaquark and its bottom partner  

作　　者：K.Azizi Y.Sarac H.Sundu 

机构地区：[1]Department of Physics,University of Tehran,North Karegar Ave.,Tehran 14395-547,lran and Department of Physics,Dogus University,Acrbadem-Kadkoy,34722 Istanbul,Turkey [2]Electrical and Electronics Engineering Department,Atilim University,06836 Ankara,Turkey [3]Department of Physics,Kocaeli University,41380 lzmit,Turkey

出　　处：《Chinese Physics C》2021年第5期58-65,共8页中国物理C（英文版）

摘　　要：We present an analysis of the newly observed pentaquark P(4312)+to shed light on its quantum num-bers.To do that,the QCD sum rules approach is used.The measured mass of this particle is close to the∑++cD-threshold and has a small width,which supports the possibility of its being a molecular state.We consider an inter-polating current in a molecular form and analyze both the positive and negative parity states with spin-1/2.We also consider the bottom counterpart of the state with similar molecular form.Our mass result for the charm pentaquark state supports that the quantum numbers of the observed state are consistent with J^(P)=1/2^(-).

关 键 词：PENTAQUARKS QCD sum rules P(4312)sate 

分 类 号：O572.33[理学—粒子物理与原子核物理]