0000000000480907

AUTHOR

S. Ya. Nikitin

showing 2 related works from this author

Observation of meson central production in baryon exchange processes

1991

The central production of ρ0,f2 and ρ30 mesons is observed for the first time in processes which are originated by π+p reactions proceeding via baryon exchange mechanism. The data come from the CERN WA56 experiment designed to separate the baryon exchange reactions in π+p-collisions at 20 GeV/c. We report on the measured integral and differential cross sections and also give the density matrix elements of the meson resonances observed.

Density matrixPhysicsParticle physicsLarge Hadron ColliderPhysics and Astronomy (miscellaneous)MesonHigh Energy Physics::PhenomenologyNuclear TheoryNuclear physicsBaryonHigh Energy Physics::ExperimentProduction (computer science)Nuclear ExperimentEngineering (miscellaneous)Particle Physics - ExperimentZeitschrift für Physik C Particles and Fields
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Backward production of mesons associated with? ++(1232) in? + p interactions at 20 GeV/c

1991

We have analyzed backward meson production inπ + p reactions at 20GeV/c, which were measured in the CERN Ω spectrometer triggered by a fast proton (p f ), in experiment WA56. Production via baryon exchange of quasi-two-body final statesΔ ++ (1232)ρ 0 (770),Δ ++ (1232)f 2 (1270), andΔ ++ (1232)ρ 3 0 (1690) is clearly identified. The density matrix elements of meson resonances and ofΔ ++ (1232) are analyzed. We have observed also the reactionsπ + p→Δ ++ (1232)π 0 andπ + p→Δ ++ (1232)ω in thep f π + π 0 andp f π + π + π − π 0 final states.

Density matrixPhysicsBaryonNuclear physicsCrystallographyMeson productionPhysics and Astronomy (miscellaneous)ProtonMesonPiElementary particleEngineering (miscellaneous)OmegaZeitschrift f�r Physik C Particles and Fields
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