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Study of mechanisms of production the final state p-barp. pi. /sup +/. pi. /sup -/ in p-barp interactions at 32 GeV/c

Journal Article · · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:6024752
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We analyze the mechanisms of production of the exclusive final state p-barp..pi../sup +/..pi../sup -/ from data of a p-barp experiment at 32 GeV/c in the Mirabelle bubble chamber. We show that the main contribution is from quasi-two-particle processes of one-vertex diffraction dissociation p( p-bar)..-->../sub //sup p/( p)p( p-bar)..pi../sup +/Q gr/sup -/ and pair production of the isobars ..delta../sup + +/approx.(..delta../sup + +/). We show that the main characteristics of production of ..delta../sup + +/approx.(..delta../sup + +/) are in good agreement with the predictions of the OPE model with absorption. We measure the cross sections for production of ..delta../sup + +/approx.(..delta../sup + +/), ..delta../sup 0/(approx.(..delta../sup 0/)), and rho/sup 0/ mesons in events lying in various sectors of the LPS diagram and establish that the main source of production of these final states is the decay of diffraction-excited protons (antiprotons).

Research Organization:
Institute of High Energy Physics, Serpukhov
OSTI ID:
6024752
Journal Information:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 40:1; ISSN SJNCA
Country of Publication:
United States
Language:
English

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Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTONS
BARYON RESONANCES
BARYON-BARYON INTERACTIONS
BARYONS
BOSON-EXCHANGE MODELS
BOSONS
DELTA-1236 RESONANCES
ELEMENTARY PARTICLES
ENERGY RANGE
EXCLUSIVE INTERACTIONS
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MESONS
N RESONANCES
NUCLEI
NUCLEON-ANTINUCLEON INTERACTIONS
NUCLEONS
OBE MODEL
OPE MODEL
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE MODELS
PERIPHERAL MODELS
PIONS
PIONS MINUS
PIONS PLUS
PROTON-ANTIPROTON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES