R. T. Ross

Inclusive neutral kaon production in 70 GeV/c K+p interactions

Abstract The inclusive production of neutral kaons in 70 GeV/ c K + p interactions is studied with the CERN BEBC bubble chamber. The (semi-)inclusive cross sections are interpreted in terms of the various strangeness channels leading to neutral kaon production. The invariant inclusive cross section for kaon production is studied as a function of p t 2 and the Feynman variable x . The latter distributions are considered both “raw” and corrected for the presence of K 0 s resulting from K ∗ decay. They are compared with the predictions expected from the Regge-Mueller formalism, the recombination model and fragmentation models.

Inclusive production of γ, Kn, Λ0 and Λ0 in K−p interactions at 110 GeV/c

Abstract Results on inclusive production of γ,K n , Λ 0 and Λ 0 in K − p interactions at 110 GeV/ c are presented. Total cross sections, and differential cross sections in terms of Feynman x , rapidity and p T 2 are given. It is found that about 40% of K n s are produced together with a strange particle pair, and that 80% of Λ 0 s are produced together with a K K pair. These Λ 0, s are produced predominantly in the backward direction. Fits to the form (1−| x |) n to the x F distributions of K n and Λ 0 in the fragmentation regions are found to be in general agreement with quark counting rule predictions.

Charged pion production in 70 GeV/cK+p interactions

Inclusive charged pion production is studied in an exposure of BEBC, filled with hydrogen, to an incidentK+ beam of 70 GeV/c. Total cross sections for pion production and inclusive longitudinal and transverse momentum distributions of π−s and of positive particles are presented and compared with data at lower energies. Earlier evidence for scaling in the fragmentation regions is confirmed. The central region π− cross section increases proportionally topLAB−1/4; positive particles show almost no energy dependence atx=0. Particle ratios π+/π− are studied as a function ofx andy* and a comparison with 70 GeV/cK−p data is made. Analysis of structure functions for (ππ) pairs and of particle production associated with π± triggers at large |x| in the context of quark/parton models, provides qualitative evidence for the diquark-quark structure of the proton.

Inclusive production of meson resonances inK−p interactions at 110GeV/c

AbstractTotal and differential cross sections ofK*−(890),K*−(890),

Cross sections and multiplicity distributions forK+p interactions at 70 GeV/c

\bar K^{ * 0}

Inclusive baryon production in K+p interactions at 70 GeV/c

(890),K*0(890),

Energy and quantum number flow inK+p and π+p interactions at 32 and 70 GeV/c

\bar K^{ * 0}