Production of Muon Pairs by 225-GeV/c ${\pi }^{\pm }$, $K^{+}$, $p^{\pm }$ Beams on Nuclear Targets

Results are presented from a large-acceptance experiment in which muon-pair production was observed in the mass range 2 to 11 GeV/${\mathit{c}}^2$. Data were taken with ${\pi }^{\pm }$, $K^{+}$, and $p^{\pm }$ beams at 225 GeV/c on carbon, copper, and tungsten targets. Differential cross sections and the production dependence on pair mass, $x_{\mathrm{F}}$, $p_T$, incident-particle type, and target nucleus are discussed.