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The soft wall model in holographic QCD has Regge trajectories but wrongoperator product expansion (OPE) for the two-point vectorial QCD Greenfunction. We modify the dilaton potential to comply OPE. We study also theaxial two-point function using the same modified dilaton field and anadditional scalar field to address chiral symmetry breaking. OPE is recoveredadding a boundary term and low energy chiral parameters, $F_\pi$ and $L_{10}$,are well described analytically by the model in terms of Regge spacing and QCDcondensates. The model nicely supports and extends previous theoreticalanalyses advocating Digamma function to study QCD two-point functions indifferent momentum regions.

Assuming Regge trajectories in holographic QCD: from OPE to Chiral Perturbation Theory