Forward inclusive production spectrum of KS, Λ0, Λ̄0, and n in the collision of 200-GeV/c π-, K-, p̄, and p on Be

We have measured the forward production spectra of various neutral particles produced by π-, K-, p̄, and p at 200 GeV/c, and by π- at 290 GeV/c incident on a Be target. The salient features of these measurements are (1) copious production of KSo at large Feynman xL for incident π- and K-, (2) production of roughly equal fluxes of Λ0 and Λ̄0 for incident π-, and (3) close similarity of the following spectra: π-→n and K-→Λ0; π-→Λ0, π-→Λ̄0, and p→KS0; π-→KS0 and p→Λ0. The overall features of the various distributions seem to agree with the ideas of dimensional counting presented in the constituent-interchange model of quark collisions. Results are presented in terms of the invariant cross section Ed3σ(xL, PT=0)dp3 per Be nucleus for each inclusive reaction.