Two-pion correlations in K+pK^+p interactions at 32 GeV/c

We present results obtained from a study of two-particle correlations in K+p interactions at 32 GeV/c. The correlations are shown as a function of rapidity and mass for different charge multiplicities. We make a particular effort to compare our results with a simple Monte Carlo model which embodies the fundamental aspects of cylindrical phase space, the leading-particle effect and the experimental topological distribution and, in the light of this, we try to estimate the qualitative significance of our results. © 1980 Società Italiana di Fisica.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Analysis of two-prong events in antiproton-proton interactions at 57 GeV/c

A study of elastic scattering, one-pion production and annihilation reactions in pp interactions at 5.7 GeV/c was carried out, from the two-prong events, obtained in the hydrogen bubble chamber exposed at CERN. Single particle distributions for the reactions pp to pp pi /sup 0/, pp to pn pi and pp to pn pi /sup -/ are The study of the squared momentum transfer distributions with and without charge exchange in the cross channel shows different behavior of the slope parameters versus the mass of the produced (N pi ) system. The cross sections for isobar production and for diffractive dissociation in the one-pion production reactions are obtained from a detailed Dalitz plot analysis. The cross sections of the annihilation reactions pp to pi /sup +/ pi /sup -/ and pp to pi /sup +/ pi /sup -/ pi /sup 0/ are determined. (10 refs)

Lambda polarization in the K- fragmentation region

Results on Λ polarization in the inclusive reaction K − p→ Λ + X at 12 and 16 GeV/ c for 0.60.6 is P Λ = 0.35 ± 0.02, along the direction K − × Λ . The polarization can be expressed as P ( x , p t ) = (0.66±0.03) p t independent of x in the range covered by the experiment