Inclusiveπ0production in 250-GeV/cπ−pinteractions

Abstract

Neutral-pion production in 250-GeV/c ${\ensuremath{\pi}}^{\ensuremath{-}}p$ interactions are studied using the Fermilab 15-ft bubble chamber. The mean number of neutral pions produced is 3.54\ifmmode\pm\else\textpm\fi{}0.15 per inelastic collision and a fit to a linear dependence on the charged multiplicity gives $〈{n}_{0}〉=1.30+0.56{n}_{\ensuremath{-}}$. The ${\ensuremath{\pi}}^{0}$ transverse- and longitudinal-momentum distributions are obtained from the inclusive $\ensuremath{\gamma}$-ray data and compared with the distribution obtained from those ${\ensuremath{\pi}}^{0}$'s which have both decay $\ensuremath{\gamma}$ rays converting in the bubble chamber.