Abstract

We consider the vertex function of two vector and one axial-vector currents using the soft-wall holographic model of QCD with the Chern-Simons term. Two structure functions wL and wT describe such a vertex in the special case in which one of the two vector currents corresponds to an on-shell soft photon. We briey review the QCD results for these functions, obtained from triangular loop diagrams with quarks having massmq = 0 ormq6 0, we computewL andwT in the soft-wall model and compare the outcome to the QCD ndings. We also calculate and discuss the two-point V V AA correlation function, together with a few low-energy constants, which turn out to be close to the QCD results.

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