Energy-dependent angular distribution of individual <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math> rays in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>La</mml:mi><mml:mprescripts /><mml:none /><mml:mn>139</mml:mn></mml:mmultiscripts><mml:mrow><mml:mo>(</mml:mo><mml:mi>n</mml:mi><mml:mo>,</mml:mo><mml:mi>γ</mml:mi><mml:mo>)</mml:mo></mml:mrow><mml:mover><mml:mmultiscripts><mml:mi>La</mml:mi><mml:…

Neutron energy-dependent angular distributions were observed for individual $\gamma$-rays from the 0.74 eV p-wave resonance of $^{139}$La+$n$ to several lower excited states $^{140}$La. The $\gamma$-ray signals analyzed in a two dimensional histogram energy, measured with distributed germanium detectors, and neutron determined time-of-flight pulsed neutrons, identify energy dependence distribution each $\gamma$-rays. was also found photopeak accompanied faint component spectrum. Our results can be interpreted as interference between s- amplitudes which may used study discrete symmetries fundamental interactions.