Electromagnetic properties of the Pc(4312) pentaquark state  

作　　者：UlaşÖzdem 

机构地区：[1]Health Services Vocational School of Higher Education,Istanbul Aydin University,Sefakoy-Kucukcekmece,34295 Istanbul,Turkey

出　　处：《Chinese Physics C》2021年第2期341-350,共10页中国物理C（英文版）

摘　　要：Using the light-cone QCD sum rules,we evaluate the magnetic moment of the P_c(4312) pentaquark state by considering both the \bar D\Sigma_c molecular and diquark-diquark-antiquark state,with quantum numbers J^P=2/1^(-1).In the calculations,we use the diquark-diquark-antiquark and molecular form of the interpolating currents for the P_(c4312) pentaquark and the distribution amplitudes of the photon.The numerical results for the magnetic moment obtained using the two different pictures are quite different from each other,which can be used to pin down the underlying structure of P_(c4312) .Any experimental measurement of the magnetic moment in the near future will provide an understanding of the internal structure of this pentaquark state.

关 键 词：PENTAQUARKS magnetic moment molecular picture diquark-diquark-antiquark picture 

分 类 号：O572.33[理学—粒子物理与原子核物理]