Inclusiveπ0Production at Large Transverse Momentum fromπ±pandppInteractions at 100 and 200 GeV/c

We have measured large-transverse-momentum ($p_{\perp }$) inclusive ${\pi }^0$ production at c.m. angles centered near 90° for ${\pi }^{\pm }p$ and $\mathrm{pp}$ interactions at 100 and 200 GeV/c. This is the first such measurement using a pion beam. The ratio $\frac{\sigma (pp\to {\pi }^{0}X)}{\sigma (\pi p\to {\pi }^{0}X)}$ decreases with increasing $p_{\perp }$ and is independent of energy when expressed as a function of $x_{\perp }=\frac{p_{\perp }}{p_{max}}$. We compare the data with predictions of various models.