2006/12/31 by Zhi-Gang Wang · 4 citations
Physics and Astronomy · #Coupling constant #Heavy quark effective theory #High-Energy Particle Collisions Research #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Radiative transfer #hep-ph
paper · pdf · doi:10.1103/physrevd.75.034013
published as Phys.Rev.D75:034013,2007 · 16 pages, 4 figures, revised version (correct writing errors)
openalex publication_date 2007/02/22 · arxiv created 2007/05/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In this article, we take the point of view that the charmed mesons Ds0(2317) and Ds1(2460) with the spin-parity 0+ and 1+ respectively are the conventional cs states, and calculate the strong coupling constants GS(for ⟨Ds*\ensuremathφ|Ds0⟩) and GA(for ⟨Ds\ensuremathφ|Ds1⟩) in the framework of the light-cone QCD sum rules approach. The strong coupling constants GS and GA are related to the basic parameter \stackrel^\ensuremathμ in the heavy quark effective Lagrangian, the numerical value is larger than the existing estimation. With the assumption of the vector meson dominance of the intermediate \ensuremathφ(1020), we study the radiative decays Ds0\ensuremath→Ds*\ensuremathγ and Ds1\ensuremath→Ds\ensuremathγ.