K with QCD sum rules
نویسنده
چکیده
In this article, we assign the D∗ s3(2860) to be a D-wave cs̄ meson, study the vertices D∗ s3(2860)DK and D ∗ s3(2860)D ∗K in details to select the pertinent tensor structures, calculate the hadronic coupling constants GD∗ s3(2860)DK and GD∗ s3(2860)DK with the three-point QCD sum rules and obtain the decay widths Γ (D∗ s3(2860) → D ∗K) and Γ (D∗ s3(2860) → DK). The predicted ratio R = Γ (D∗ s3(2860) → D ∗K) /Γ (D∗ s3(2860) → DK) = 0.57 ± 0.38 cannot reproduce the experimental data R = Br (D∗ sJ (2860) → D ∗K) /Br (D∗ sJ (2860) → DK) = 1.10 ± 0.15± 0.19. PACS number: 14.40.Lb, 12.38.Lg
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