gamma^* gamma^* -> pi^0 Form Factor from AdS/QCD

preprint2011arXivOpen access

Abstract

The recently measured γγ∗→π0γγ^*\rightarrow π^0 anomalous form factor is analyzed using the D4/D8D8ˉD4/D8\bar{D8} holographic approach to QCD. The half-on-shell transition form factor is vector meson dominated and is shown to exactly tie to the pion form factor. The holographic result compares well with the data for the lowest vector resonance.

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