Strong Couplings of Three Mesons with Charm(ing) Involvement

Abstract

We determine the strong couplings of three mesons that involve, at least, one ${\eta }_c$ or $J/\psi$ meson, within the framework of a constituent-quark model by means of relativistic dispersion formulations. For strong couplings of $J/\psi$ mesons to two charmed mesons, our approach leads to predictions roughly twice as large as those arising from QCD sum rules.

arXiv comment5 pages, 3 figures, contributed to "Quark Confinement and the Hadron Spectrum XII" (28 August - 3 September 2016, Thessaloniki, Greece)

References in corpus (13)

• Big-Bang Nucleosynthesis
• Weak form factors for heavy meson decays: an update
• Update: Precision D_s decay constant from full lattice QCD using very fine lattices
• Precision tests of the J/ψ from full lattice QCD: mass, leptonic width and radiative decay rate to η_c
• Nucleon and pion electromagnetic form factors in a light-front constituent quark model
• OPE, charm-quark mass, and decay constants of D and D_s mesons from QCD sum rules
• Decay constants of the charmed vector mesons $D^{\ast }$ and $D_s^{\ast }$ from QCD sum rules
• D-meson decay constants and a check of factorization in non-leptonic B-decays
• The $g_{J/\psi D_s{D}_s}$ strong coupling constant from QCD Sum Rules
• Constituent quarks, chiral symmetry, and chiral point of the constituent quark model
• Strong three-meson couplings of $J/\psi$ and ${\eta }_c$
• Fall-apart decays of polyquark hadrons
• A QCD sum rules calculation of the $J/\psi D_s^{\ast }{D}_s$ strong coupling constant