Effect of annihilation of quasinuclear baryonium states in higher partial waves

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Sov. Phys. - JETP (Engl. Transl.); (United States)

OSTI ID:5043146

Tyapaev, P

The cross section for the annihilation of a nucleon (N) and a antinucleon (N-bar) from continuum states, as well as the annihilation widths and shifts of the levels of a quasinuclear NN-bar system with orbital momentum l = 0, is calculated within the framework of the coupled-channel model. It is shown that although the annihilation cross section is large (it is comparable with the unitary limit at nonrelativistic energies), the annihilation widths GAMMA/sub an/ of the quasinuclear states are small (GAMMA/sub an/ = 1--10 MeV at l = 2). It is observed that annihilation decreases the resonance width, and the physical cause of this phenomenon is explained.

• Research Organization: Moscow Engineering Physics Institute
• OSTI ID: 5043146
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 55:2; ISSN SPHJA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645205 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 0-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BARYON-BARYON INTERACTIONS
BARYONIUM
BASIC INTERACTIONS
BOSONS
BOUND STATE
COUPLED CHANNEL THEORY
CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LEVEL WIDTHS
MESON RESONANCES
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
RESONANCE PARTICLES