Infrared-Improved Soft-wall AdS/QCD Model for Mesons

Oct 24, 2013
15 pages
Published in:
  • Eur.Phys.J.C 76 (2016) 1, 22
  • Published: Jan 19, 2016
e-Print:

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Abstract: (Springer)
We construct and investigate an infrared-improved soft-wall AdS/QCD model for mesons. Both linear confinement and chiral symmetry breaking of low energy QCD are well characterized in such an infrared-improved soft-wall AdS/QCD model. The model enables us to obtain a more consistent numerical prediction for the mass spectra of resonance scalar, pseudoscalar, vector, and axial-vector mesons. In particular, the predicted mass for the lightest ground state scalar meson shows good agreement with the experimental data. The model also provides a remarkable check for the Gell-Mann–Oakes–Renner relation and a sensible result for the space-like pion form factor.
Note:
  • 15 pages, 4 figures, 7 tables, published version
  • meson: model
  • quantum chromodynamics: model
  • space-time: anti-de Sitter
  • symmetry breaking: chiral
  • confinement: linear
  • pi: form factor
  • Gell-Mann-Oakes-Renner
  • resonance: mass spectrum
  • scalar meson: mass
  • vector meson: mass