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

References in corpus (6)

• Chiral Dynamics of Baryons from String Theory
• Baryons in Holographic QCD
• Perfecting the Ultra-violet of Holographic Descriptions of QCD
• Four-point functions and kaon decays in a minimal AdS/QCD model
• An Eta Primer: Solving the U(1) Problem with AdS/QCD
• Dimension Six Corrections to the Vector Sector of AdS/QCD Model

Cited by in corpus (1)

• Meson-Nucleon Coupling from AdS/QCD