On the Son-Yamamoto relation in the soft-wall holographic model of QCD

Abstract

We study the vertex function of two vector and one axial-vector operators in the soft-wall holographic model of QCD. In particular, we discuss the possible relation, introduced by Son and Yamamoto, between the structure function $w_T$ describing such a vertex when one of the two vector currents represents an on-shell soft photon and the the two-point ${\Pi }_{\perp }^{VV}-{\Pi }_{\perp }^{AA}$ correlation function.

Comments: contribution to conference QCD@Work - International Workshop on QCD - Theory and Experiment, 18-21 June 2012, Lecce - Italy