  An evaluation of charged pion polarizability using correlation functions
measured on a 16^{3}\times 24 lattice in the context of the Das, Mathur, Okubo
(DMO) sum rule is carried out. The calculation is limited to the so-called
intrinsic part of the polarizability. This contribution, equivalent to a
Euclidean time integral over vector and axial vector momentum-differentiated
propagators, is evaluated in both a continuous and discrete sense. In the
continuous case, the time behavior of the correlation functions is fit to the
continuum quark model; the discrete case is handled by a straightforward
application of Simpson's rule for integration after subtracting the pion
contributions. A comparison of the implied vector meson and pion decay
constants with phenomenological values is carried out. Results for the
intrinsic polarizability are extrapolated across four quark mass values to the
chiral limit. An extensive discussion of the lattice systematics in this
calculation is given.
