P-matrix analysis of the dibaryon /sup 1/D/sub 2/ resonance

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6300299

Grach, I L; Narodetskii, I M; Shmatikov, M Z

The relation between the 6-quark states of the bag model and nucleon-nucleon scattering in the dibaryon-resonance region is discussed. The existing data from phase-shift analysis are used to calculate the P matrix for the coupled pp(/sup 1/D/sub 2/) and N..delta..(/sup 5/S/sub 2/) channels at energies above the ..delta..-isobar production threshold. It is shown that for equivalent hadron bag radii in the range b = 1.3--1.5 F the P matrix has a pole in the mass range 2.33--2.36 GeV, which is in agreement with the mass of 2.34 GeV for the 6-quark state with I = 1, J/sup P/ = 2/sup +/ calculated in the MIT bag model. It is also shown that the hadronic shift of this state is approx.200 MeV; we find the dibaryon pole in the S-matrix to be at 2.15--2.17 GeV with width 100--200 MeV.

• Research Organization: Institute of Theoretical and Experimental Physics, State Commission on Use of Atomic Energy
• OSTI ID: 6300299
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 39:1; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645207* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BARYON RESONANCES
BARYON-BARYON INTERACTIONS
BARYONS
COMPOSITE MODELS
DELTA-1236 RESONANCES
DIBARYON RESONANCES
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MATRICES
N RESONANCES
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
QUARK MODEL
QUARKS
RESONANCE PARTICLES
S MATRIX
SCATTERING