Holographic QCD beyond the leading order

Abstract

We consider a holographic QCD model for light mesons beyond the leading order in the context of 5-dim gauged linear sigma model on the interval in the AdS${}_5$ space. We include two dimension-6 operators in addition to the canonical bulk kinetic terms, and study chiral dynamics of $\pi$, $\rho$, $a_1$ and some of their KK modes. As novel features of dim-6 operators, we get non-vanishing Br$(a_1\to \pi \gamma )$, the electromagnetic form factor and the charge radius of a charged pion, which improve the leading order results significantly and agree well with the experimental results.

16 pages, 1 figure, 3 tables, accepted by JHEP

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Cited by in corpus (7)

• Meson-Nucleon Coupling from AdS/QCD
• Holography at work for nuclear and hadron physics
• Mesons and nucleons from holographic QCD in a unified approach
• Self-bound dense objects in holographic QCD
• Low-energy theorems and spectral density of the Dirac operator in AdS/QCD
• Quark scalar current correlator in AdS/QCD approach
• Strange meson form factors in holographic QCD