A. P. Vorobjev

Inclusive production of ϱ0 and φ mesons in K+p interactions at 32 GeV/c

Abstract Inclusive ϱ 0 and φ production is investigated in K + p interactions at 32 GeV/ c . Total and semi-inclusive ϱ 0 and φ cross sections, longitudinal and transverse momentum distributions, including 〈 P T versus x 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 ϱ 0 and vector mesons are produced as fragmentation products of the incident particles. Study of uncorrelated π + π − pairs in the ϱ 0 mass range provides possible indirect evidence for the existence of diquarks in the proton.

InclusiveK*+(1430),K*0(1430), andf(1270) production inK+p interactions at 32 GeV/c

Results are presented on total and semiinclusive cross sections, longitudinal and transverse momentum distributions of the tensor mesonsK*+(1430),K*0(1430), andf(1270) observed inK+p interactions at 32 GeV/c. The data are compared withK*+(892).K*0(896) and ϱ0 vector meson production in the same experiment. The shapes of inclusive invariantx-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.

Inclusive single and double diffractive dissociations inK+p interactions at 32 GeV/c

AbstractWe study single and double inclusive diffractive production in a 32 GeV/c K+p experiment in MIRABELLE at the Serpukhov accelerator. From reactionsK+p→K++X+ andK+p→X++p we determine the total proton and kaon single diffractive dissociation cross sections

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

\sigma (p\xrightarrow{{K^ + }}p_D ) = 0.90 \pm 0.12 mb

Study of the inclusive reactions K+p → pX and K+p → pK0X at 32 GeV/c

and

Systematics of exclusive diffraction dissociation modes inK± p interactions at 32 GeV/c

\sigma (K^ + \xrightarrow{p}K_D^ + ) = 0