InclusiveηProduction at Large Transverse Momenta

Abstract

We have measured the ratio of inclusive production of $\eta$ to ${\pi }^0$ at transverse momenta above 1.5 GeV/c. Results are presented for various meson and proton beams with momenta of 100, 200, and 300 GeV/c incident upon a hydrogen target. The $\frac{\eta }{{\pi }^0}$ production ratio is found to be independent of incident beam momentum and of the transverse and longitudinal momenta of production. The ratio for pion- and proton-induced reactions is 0.44 ± 0.05; for kaons, it is 0.74 ± 0.12.