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Analysis of the (D)over-bar Sigma(c),(D)over-bar Sigma(c)*,(D)over-bar*Sigma(c),and (D)over-bar*Sigma(c)* pentaquark molecular states with QCD sum rules

Author:
Wang, Zhi-Gang  


Journal:
INTERNATIONAL JOURNAL OF MODERN PHYSICS A


Issue Date:
2019


Abstract(summary):

In this paper, we study the (D) over bar Sigma(c), (D) over bar Sigma(c)*, (D) over bar*Sigma(c), and (D) over bar*Sigma(c)* pentaquark molecular states with the QCD sum rules by carrying out the operator product expansion up to the vacuum condensates of dimension 13 in a consistent way. The present calculations support assigning the P-c(4312) to be the (D) over bar Sigma(c) pentaquark molecular state with J(P) =3D 1/2(-), assigning the P-c(4380) to be the (D) over bar Sigma(c)* pentaquark molecular state with J(P) =3D 3/2(-), assigning the P-c(4440/4457) to be the (D) over bar*Sigma(c) pentaquark molecular state with J(P) =3D 3/2(-) or the (D) over bar*Sigma(c)* pentaquark molecular state with J(P) =3D 5/2(-). Special attention is paid to the operator product expansion.


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