Measurement of $ν_μ$ and $\barν_μ$ Neutral Current $π^{0} \rightarrow γγ$ Production in the ArgoNeuT Detector

Abstract: The ArgoNeuT collaboration reports the first measurement of neutral current $\pi^{0}$ production in $\nu_{\mu}$-argon and $\bar{\nu}{\mu}$-argon scattering. This measurement was performed using the ArgoNeuT liquid argon time projection chamber deployed at Fermilab's NuMI neutrino beam with an exposure corresponding to 1.2$\times 10^{20}$ protons-on-target from the Fermilab Main Injector and a mean energy for $\nu{\mu}$ of 9.6~GeV and for $\bar{\nu}_{\mu}$ of 3.6~GeV. We compare the measured cross section and kinematic distributions to predictions from the GENIE and NuWro neutrino interaction event generators.