Obtaining the strong coupling constants g_{J/ψDs Ds} and g_{ϕDs Ds} from QCD Sum Rules

2012/10/01 by Mirian E. Bracco, Bracco, M. E., M. Chiapparini +3
Physics and Astronomy · #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Black Holes and Theoretical Physics

paper · pdf · doi:10.48550/arxiv.1210.0471

Abstract

The form factors and coupling constants of the meson vertices J/ψD_s D_s and ϕD_s D_s were calculated using three point correlation functions within the QCD Sum Rules formalism. We have considered the cases where ϕ, D_s and J/ψmesons are off-shell obtaining, for each vertex, two different form factors and its corresponding coupling constants, namely g_{J/ψDs Ds} = 6.20^+0.97_-1.15 and g_{ϕDs Ds} = 1.85^+0.22_-0.23.

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