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Analysis of the strong decays Ds3 *(2860) \(\rightarrow\) DK, D*K with QCD sum rules

  • Zhi-Gang WangEmail author
Regular Article - Theoretical Physics

Abstract.

In this article, we assign the \( D_{s3}^{\ast}(2860)\) to be a D-wave c \( \bar{s}\) meson, study the hadronic coupling constants \( G_{D_{s3}^{\ast}(2860)DK}\) and \( G_{D_{s3}^{\ast} (2860)D^{\ast}K}\) with the three-point QCD sum rules, and calculate the partial decay widths \(\Gamma (D_{s3}^{\ast} (2860) \rightarrow D^{\ast}K)\) and \( \Gamma (D_{s3}^{\ast}(2860) \rightarrow DK)\) . The predicted ratio \( R = \Gamma (D_{s3}^{\ast} (2860)\rightarrow D^{\ast}K)/\Gamma (D_{s3}^{\ast} (2860)\rightarrow DK) = 0.57\pm 0.38\) cannot reproduce the experimental value \( R = Br(D_{sJ}^{\ast} (2860)\rightarrow D^{\ast}K)/Br (D_{sJ}^{\ast} (2860)\rightarrow DK) = 1.10 \pm 0.15 \pm 0.19\).

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Department of PhysicsNorth China Electric Power UniversityBaodingChina

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