[en] New experimental results are presented on inclusive production properties of anti Σsup(*)⁺(1385) and anti Σsup(*)^-(1385) in K⁺p interactions at 32 GeV/c. The analysis is based on significantly larger statistics than previously available. A comparison is also made of invariant x-distributions of K⁰/anti K⁰, anti Λ and anti Σ⁺sup(+-) and of anti Σ⁺sup(+-)(1385) and Ksup(*)⁺(892). These spectra exhibit regularities expected from the quark-recombination picture when it is assumed that the strange mesons and antibaryons are produced off the strange anti s-valence-quark in the incident K⁺ meson. Transverse momentum distributions are also presented for Ksup(*)⁺(892) and anti Σsup(*)sup(+-)(1385) and found to be very similar. The results on strange antibaryon average multiplicities disagree strongly with a recent version of the additive quark model. (orig.)

[en] Results are presented on total and semi inclusive cross sections. Longitudinal and transverse momentum distributions of the tensor mesons Ksup(*)⁺(1430), Ksup(*)⁰(1430), and f(1270) observed in K⁺p interactions at 32 GeV/c. The data are compared with Ksup(*)⁺(892), Ksup(*)⁰(896) and rho⁰ vector meson production in the same experiment. The shape of inclusive invariant x-spectra for the strange vector and tensor mesons are found to be rather similar, after removal of diffractive and quasi-two-body channels, in agreement with quark-recombination ideas. (orig.)

[en] Inclusive rho⁰ and phi production is investigated in K⁺p interactions at 32 GeV/c. Total and semi-inclusive rho⁰ and phi cross sections, longitudinal and transverse momentum distributions, including (psub(T)) versus chi dependence are presented. No evidence for a sea-gull effect is observed. Comparison with quark models strongly suggests the possibility that a large fraction of the rho⁰ and vector mesons are produced as fragmentation products of the incident particles. Study of uncorrelated π⁺π^- pairs in the rho⁰ mass range provides possible indirect evidence for the existence of diquarks in the proton. (orig.)

[en] We present evidence for a new narrow state decaying into phi π⁺ with a mass of 2145 +- 10 MeV/c² and an experimental width of 25 MeV/c², produced in K⁺p interactions at 32 GeV/c. The production cross section sigma x BR (→ phi π⁺) is equal to 11 +- 3 μb. (orig.)

[en] Evidence is provided for a new resonance in the K⁰sub(s)K⁰sub(s)π⁺π^- system with a mass of 1.97 + 0.01 GeV and width 40 +- 20 MeV. It is produced with an inclusive cross section of approximately 6 μb in the beam fragmentation process of 4-prong K⁺p interactions with at least 2 associated V⁰'s at 32 GeV/c and decays dominantly into the K*⁺-(892)K⁰s π^-+ mode. (orig.) 891 HSI/orig. 892 HIS

[en] Inclusive production of Δ⁺⁺(1232) with tsub(p,Δ)⁺⁺ < 0.6 (GeV/c)² is studied in 32 GeV/c K⁺p interactions. A systematic comparison with the reaction K⁺p → pX for tsub(p,p) < 0.6 (GeV/c)² is made. The production properties of the Δ⁺⁺(1232), of associated π⁺, π^- and K⁰ production and of the recoiling system X⁰ are investigated in detail. The polarization of the Δ⁺⁺ and the energy dependence of the total K⁺π^- cross sections, determined by a Chew-Low extrapolation, are presented and discussed. (orig.)

[en] Production of anti Σsup(*-) and anti Ψsup(*-) antibaryon resonances in K⁺ fragmentation processes is observed by studying inclusive anti Λπ⁺ and anti ΛK⁺ invariant mass distributions in 32 GeV/c K⁺p interactions. A possible Ψsup(*-) state is reported with a mass of 2137+-4 MeV and width < approximately 20 MeV. Signals are observed at anti ΛK⁺ masses of 2240, 2380 and 2540 MeV, which correspond to previously observed Ψsup(*-) states. Evidence is presented for a low-mass antiΛp enhancement around 2145 MeV. (Auth.)

No abstract available

[en] The production properties of Ksub(s)⁰, anti Λ and Λ in K⁺ p interactions at 32 GeV/c are investigated using the final statistics of the experiment. We present total and semi-inclusive cross sections and average multiplicities. Estimates are given of the diffractive dissociation contributions to total and differential cross sections. The x-, psub(T)-, and transverse mass dependence of inclusive and semi-inclusive distributions is discussed as well as properties of ''prompt'' Ksub(s)⁰'s. The ratio of ''prompt'' Ksup(*+)₈₉₀ (Ksup(*0)₈₉₀) to ''prompt'' K⁰ cross sections is measured to be 1.03+-0.12 (0.98+-0.17). From a comparison of anti Λ production in Ksup(+-) p interactions at 32 GeV/c, we estimate a strange sea-quark suppression of 0.26+-0.02. The double differential cross sections of Ksub(s)⁰'s is studied as a function of Feynman-x and psub(T)², and a Triple-Regge fit performed. The data are compared in detail to versions of the LUnd-model for low-Psub(T) hadronic collisions. (orig.)

[en] We present final results on inclusive production of Ksup(*+)(890), Ksup(*+)(1,430) and anti Ksup(*-)(890) in anti K⁺p interactions at 32 GeV/c, based on a statistics of proportional27 events/μb. Total cross sections, psub(T)- and z-dependence of inclusive distributions are compared with experiments at other energies and with the Lund fragmentation model. Spin density matrix elements of the Ksup(*+)(890) are also discussed. The results suggest that ''recombination'' of both initial state valence quarks anti s and u of the K⁺ into Ksup(*+)(890), responsible in the Lund model for proportional45% of the Ksup(*+)(890) cross section, is strongly suppressed. (orig.)