F. Levy

A study of inclusive Λ, > Σ0 and Σ(1385) production in K−p interactions at 8.25 GeV/c

Abstract Inclusive Λ production has been studied in K−p interactions at 8.25 GeV/c using about 69 000 events; the total cross section is found to be 3.35 ± 0.20 mb. A comparison has been made with Σ0 and Σ(1385) inclusive production. Their influence on the inclusive Λ production is discussed. The inclusive Λ cross section and polarization is interpreted in terms of the triple-Regge model. In the target fragmentation region an effective Regge trajectory is determined which lies closer to the K than to the K∗. In the beam fragmentation region the cross-section data indicate an effective Regge trajectory which corresponds to the nucleon, while the polarization data require additional Regge exchanges to be present.

Observation of a narrow hyperon state of mass 3.17 GeV

Abstract We present evidence for a narrow Y∗ with a mass of 3.17 GeV and a width ⩽ 20 MeV decaying to ΣKK + pions, ΛKK + pions and ΞK + pions. The data come from two high statistics K−p bubble chamber experiments with a sensitivity of ≈100 eV/μb at 8.25 GeV/c and ≈ 45 eV/μb at 6.5 GeV/c.

Study of the reaction K−p→φφΛ at 8.25 GeV/c

Abstract In a high statistics bubble chamber study the reaction K − p → φφΛ is detected with a cross section of 0.7±0.2 μ b. The ratio of φφ production in K − and π − induced reactions is found to be ∼5; this is about ten times smaller than the ratio for the corresponding single φ production reactions.

A partial wave analysis of thef′ region in the reaction\(K^ - p \to K\bar K\Lambda ^0 \) at 8.25 GeV/c

AbstractA partial wave analysis of theK

The five pion final state in the T-region

\bar K

A study of the reactions K−p → Λπ0, Λη, Λη at 8.25 GeV/c incident K− momentum

system produced by 8.25 GeV/cK− mesons in the reaction

Evidence for a Λp resonance with spin-parity 2−

K^ - p \to K\bar K\Lambda ^{ 0}