2006/10/31 by Yuan-Ben Dai, Xin-Qiang Li, Shi-Lin Zhu +1 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-008-0591-9
published as Eur.Phys.J.C55:249-258,2008
arxiv created 2008/04/01 · openalex publication_date 2008/04/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
Using the soft-pion theorem and the assumption on the final-state interactions, we include the contribution of DK continuum into the QCD sum rules for DsJ(2317) meson. We find that this contribution can significantly lower the mass and the decay constant of Ds(0+) state. For the value of the current quark mass mc(mc)=1.286 \rm GeV, we obtain the mass of Ds(0+) M=2.33 ± 0.02 \rm GeV in the interval s0=7.5-8.0 \rm GeV2, being in agreement with the experimental data, and the vector current decay constant of Ds(0+) f0=0.128 ± 0.013 \rm GeV, much lower than those obtained in previous literature.