Development of a proton/muon discrimination algorithm to investigate neutrino-nucleon elastic scattering in the P{\O}D

The PiZero sub-detector (P{\O}D) of the T2K off-axis near detector ND280 is used to measure neutrino interactions and beam properties. The measurement of neutrino-nucleon elastic scattering requires a robust contained-track particle identification (PID) algorithm to indentify protons while rejecting the large background of muons and pions from other neutrino interaction channels. I will give a brief description of the P{\O}D, an overview of neutrino interactions, and then a description of the method and performance of this discrimination algorithm.