Computation of the p6 order chiral Lagrangian coefficients

We present results of computing the p⁶ order low energy constants in the normal part of chiral Lagrangian both for two and three flavor pseudoscalar mesons. This is a generalization of our previous work on calculating the p⁴ order coefficients of the chiral Lagrangian in terms of the quark self-energy Σ(p²). We show that most of our results are consistent with those we can find in the literature.