Remarks Concerning Scaling in the Mean Applied to the Inclusive Reactions pp → K_s⁰+X⁺⁺ and pp → Λ+X⁺⁺ at 19 GeV/c

Abstract

Single particle distributions as functions of the scaled variables pT/⟨pT⟩ and pL/⟨pL⟩ have been studied for neutral strange particles produced in proton-proton interactions at 19 GeV/c. For pp → Ks0+X++ the distributions in both variables for different charged particle multiplicities show approximate scaling, while for pp → Λ+X++ only the distribution in the transverse variable shows this behaviour.

Single-Particle Properties ofΛandKs0from 19 GeV/c Proton-Proton Interactions

“…The pattern of points is not very different from one prong class (3)- (6). to another, but corresponds in general to a bell-like shape, irrespective of the reaction topology.…”

“…For the A from the AK' production state (Fig. 4(b)) a dipand-bump structure in the cross-section is seen in all separate prong classes contributing to the semi-inclusive reaction (6). The effect is most strikingly observed in the 2-prong class, for which the cross-section is quite small at small x and peaks very strongly around x 0.6 before it again drops whenx approaches the lunematic limit.…”

“…the reactions p t p -+ K,O +K: +x++ (3) p + p -+ A + K ~+ x + + (4) In this paper we report on the single-particle features of the K: in the semi-inclusive reactions (3), (4) and compare with the corresponding single-particle properties obtained for the overall inclusive reaction (1). Since in our experiment a A hyperon is almost exclusively produced in association with either a KO or a K' meson we have used our data on reactions (2) and (4) to separate the two semi-inclusive reactions p t p -+ A + K o +X'+ (5) p + p -+ A + K + + x + (6) and for which we present the single-particle properties of the A.…”