Study ofΔ++production inπ−pinteractions at 100, 200, and 360 GeV/c

We present a systematic study of ${\Delta }^{++}$ production in ${\pi }^{-}p$ reactions at Fermilab energies. Inclusive and semi-inclusive ${\Delta }^{++}\mathrm{}\left(1232\right)\mathrm{}$ production cross sections are determined. We observe these cross sections to be energy independent. The invariant cross sections as a function of Feynman $x$ and ${p_T}^2$ are also energy independent consistent with scaling behavior. We show that ${\Delta }^{++}$ production is consistent with a one-pion-exchange mechanism. Comparison of the density matrix elements with model predictions and results of a triple-Regge analysis both support the validity of a one-pion-exchange model.