An sp-mixing model, which describes a compound nuclear reaction by mixing partial waves, predicts a correlation term in this reaction. A detailed study of the sp-mixing model is required to study the feasibility of a new type of time reversal symmetry violation search experiment. The correlation term sigma(n) center dot (k(n) x k(gamma)) in the La-139((n) over right arrow,gamma) reaction has been studied by measuring gamma-ray and neutron energies utilizing epithermal polarized neutrons and germanium detectors. The transverse asymmetry for single gamma-ray transition was measured to be 0.60 +/- 0.19 in the p-wave resonance.