2007/12/04 by Zuohong Li, Zuo-Hong Li, Wei Liu +2 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/j.physletb.2007.11.074
published as Phys.Lett.B659:598-606,2008 · 16 pages, 1 eps figure, version to appear in PLB
arxiv created 2007/12/04 · openalex publication_date 2007/12/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03
The strong interactions of the negative-parity heavy mesons with ρ meson may be described consistently in the context of an effective Lagrangian, which is invariant under isospin SU(2) transformation. Four coupling constants gHHρ, fH∗Hρ, gH∗H∗ρ and fH∗H∗ρ enter the effective Lagrangian, where H (H∗) denotes a pseudoscalar bottom or charm meson (the corresponding vector meson). Using QCD light cone sum rule (LCSR) method and, as inputs, the hadronic parameters updated recently, we give an estimate of gH∗H∗ρ and fH∗H∗ρ, about which little was known before, and present an improved result for gHHρ and fH∗Hρ. Also, we examine the heavy quark asymptotic behavior of these nonperturbative quantities and assess the two low energy parameters β and λ of the corresponding effective chiral Lagrangian.