Vertices of the scalar and axial vector charmed mesons with vector kaon: Three-point QCD sum rules

Abstract

In this article, the three-point QCD sum rules are used to compute the strong coupling constants of vertices containing strange charmed mesons with the K⁎. The coupling constants are calculated when both charm and K⁎ states are off-shell. In this calculation, the contributions of the quark-quark, quark-gluon, and gluon-gluon condensates corrections are considered. Considering the SUf(3) symmetry, the coupling constant D0K⁎Ds0⁎ and D1K⁎Ds0⁎ vertices are calculated 7.25±0.76 and 9.69±0.85 GeV−1, respectively. © 2020 Elsevier B.V.