Study of diffraction processes in the exclusive channel p-barp. -->. p-barp2. pi. /sup +/2. pi. /sup -/ at 32 GeV/c

Journal Article · Thu Mar 31 23:00:00 EST 1988 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:7086477

Bogolyubskii, M Y; Borovikov, A A; Bravina, L V; Bumazhnov, V A; Vinitskii, A A; Ermolov, P F; Zhautykov, B O; Zabrodin, E E; Zagurskii, A B; Zakamskii, L L; others, and

Using data on the exclusive channel p-barp..-->..p-barp2..pi../sup +/2..pi../sup -/ we have developed a method of identifying two-vertex diffraction dissociation of the type (p..pi../sup +/..pi../sup -/)/sub d/+(p-bar..pi../sup +/..pi../sup -/)/sub d/ and single-vertex diffraction dissociation of the type (p2..pi../sup +/2..pi../sup -/)/sub d/+p-bar and have estimated cross sections for these processes. It is shown that the decay of the diffractively excited protons and antiprotons into three hadrons occurs mainly through an intermediate state with the ..delta../sup + +/(1238) isobar, but the five-particle diffractive system is produced through intermediate states with ..delta../sup + +/(1238) and rho/sup 0/(770). In the distribution of the effective mass M(p..pi../sup +//sub 1/..pi../sup +//sub 2/) from the five-particle diffractive system we have observed a threshold maximum which can be related to interference effects of the ..delta../sup + +/(1238) isobar production.

• Research Organization: Institute of High Energy Physics, Serpukhov
• OSTI ID: 7086477
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 47:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

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-BARYON INTERACTIONS
BARYONS
BOSONS
CROSS SECTIONS
DATA ANALYSIS
DELTA BARYONS
DELTA-1232 BARYONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXCLUSIVE INTERACTIONS
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
INTERFERENCE
MESONS
N BARYONS
NUCLEI
NUCLEON-ANTINUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PIONS
PIONS MINUS
PIONS PLUS
PROTON-ANTIPROTON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
RHO-770 MESONS
VECTOR MESONS