Mechanisms of production of resonances in four-particle final states in K/sup -/p interactions at 32 GeV/c

Journal Article · Sun Nov 01 04:00:00 EST 1981 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5391657

Bogolyubskii, M; Kotova, A; Levitskii, M; Moiseev, A; Patalakha, D; Proskuryakov, A; Starchenko, E; Ukhanov, M

In a study of four-particle exclusive reactions in K/sup -/p interactions at 32 GeV/c it is shown that the final state K/sup -/p..pi../sup +/..pi../sup -/ is formed mainly in processes of three-particle diffraction dissociation of the primary K/sup -/ meson and the proton, while the final states K/sup -/pK/sup +/K/sup -/ and K/sup -/ppp-bar are formed to a high degree as the result of diffraction of only the primary K/sup -/ meson. The decay of these diffraction-excited systems is the main source of the resonances K-bar*/sup 0/ (892), rho/sup 0/ (770), ..delta../sup + +/ (1238), and ..delta../sup 0/ (1238). From analysis of the angular characteristics of the decay of diffraction systems for the reaction K/sup -/p..-->..K/sup -/p..pi../sup +/..pi../sup -/ an indication is obtained of the preferential conservation of helicity in the T-channel in comparison with the S-channel, which is especially noticeable in the region associated with the production of the resonances Q/sup -//sub 2/ (1420) and N* (1710). An analysis is made of the decay characteristics of K-bar*/sup 0/(892) and ..delta../sup + +/(1238) in terms of the spin density matrix.

• Research Organization: Institute of High Energy Physics, Serpukhov
• OSTI ID: 5391657
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 34:5; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON RESONANCES
BARYONS
BOSONS
DELTA-1236 RESONANCES
DIFFRACTION MODELS
ELEMENTARY PARTICLES
ENERGY RANGE
EXCLUSIVE INTERACTIONS
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
HELICITY
INTERACTIONS
K RESONANCES
K-892 RESONANCES
KAON MINUS-PROTON INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
MATHEMATICAL MODELS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
N RESONANCES
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
Q RESONANCES
RESONANCE PARTICLES
RHO-765 RESONANCES
STRANGE PARTICLES
VECTOR MESONS