Single-Pion Production in Neutrino and Antineutrino Reactions

We have studied the neutral-current reactions ν_μN→ν_μN^'π⁰ and ν_μN→ν_μN^'π⁰ and compared them to the charged-current reactions ν_μN→μ^-N^''π⁰ and ν_μN→μ⁺N^''π⁰. We have measured the ratios ${{R}₀}^{{'}}={{σ}({{ν}}_{{μ}}N{→}{{ν}}_{{μ}}{N}^{{'}}{{π}}⁰)}{2{σ}({{ν}}_{{μ}}N{→}{{μ}}^{{-}}{N}^{{'}{'}}{{π}}⁰)}$ and ${{R̄}₀}^{{'}}={{σ}({{{ν}}}_{{μ}}N{→}{{{ν}}}_{{μ}}{N}^{{'}}{{π}}⁰)}{2{σ}({{{ν}}}_{{μ}}N{→}{{μ}}⁺{N}^{{'}{'}}{{π}}⁰)}to be 0.17±0.04 and 0.39±0.18, respectively. We also present the{{π}}⁰p$ invariant-mass distribution of the neutrino-induced reactions.