6533b82ffe1ef96bd129647f

RESEARCH PRODUCT

Backward production of mesons associated with? ++(1232) in? + p interactions at 20 GeV/c

Ara GrigoryanAntonio FerrerA. S. ZhokinV. I. MikhailichenkoV. V. KarapetyanL. DorsazN. Z. AkopovV.f. PerepelitsaS. Ya. NikitinP. Sonderegger

subject

Density matrixPhysicsBaryonNuclear physicsCrystallographyMeson productionPhysics and Astronomy (miscellaneous)ProtonMesonPiElementary particleEngineering (miscellaneous)Omega

description

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.

yearjournalcountryeditionlanguage
1991-09-01Zeitschrift f�r Physik C Particles and Fields
https://doi.org/10.1007/bf01551451