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Analysis of the D(D)over-bar(*) K System with QCD S Rules

Author:
Di, Zun-Yan  Wang, Zhi-Gang  


Journal:
ADVANCES IN HIGH ENERGY PHYSICS


Issue Date:
2019


Abstract(summary):

In this article, we construct the color singlet-singlet-singlet interpolating current with I(J(P)) =3D (3/2)(1(-)) to study the D (D) over bar (*) K system through QCD sum rules approach. In calculations, we consider the contributions of the vacuum condensates up to dimension-16 and employ the formula mu =3D root M-X/Y/Z(2) -(2M(c))(2) to choose the optimal energy scale of the QCD spectral density. The numerical result M-z =3D 4.71(-0.11)(+0.19) GeV indicates that there exists a resonance state Z lying above the D (D) over bar (*) K threshold to saturate the QCD sum rules. This resonance state Z may be found by focusing on the channel J/Psi pi Kappa of the decay B -> J/Psi pi pi Kappa in the future.


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