I =0, J sup P =1 sup minus quasibound state in the. eta. NN -. pi. NN coupled system
Journal Article
·
· Physical Review Letters; (USA)
- Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan (JP)
The existence of an {ital I}=0, {ital J}{sup {ital P}}=1{sup {minus}} quasibound state in the {eta}{ital NN}-{pi}{ital NN} coupled system is theoretically predicted with a mass of about 2430 MeV and a width 10--20 MeV. The three-body equation for the {eta}{ital NN}-{pi}{ital NN} coupled system. The primary two-body interactions generating the bound state are (1) the {ital NN} interaction in the {sup 3}{ital S}{sub 1}-{sup 3}{ital D}{sub 1} state and (2) the {pi}{ital N} and {eta}{ital N} coupled interaction in the {ital S}{sub 11} state. A remarkable enhancement of the elastic cross section of {eta}-{ital d} scattering near the {eta}{ital d} threshold is found, whose origin is in the pole structure of the {ital I}=0, {ital J}{sup {ital P}}=1{sup {minus}} {eta}{ital d} scattering amplitude on the complex energy plane.
- OSTI ID:
- 6197967
- Journal Information:
- Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:3; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645204 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BOSONS
BOUND STATE
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MANY-BODY PROBLEM
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PERTURBATION THEORY
PHASE SHIFT
PION-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
THREE-BODY PROBLEM
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BOSONS
BOUND STATE
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MANY-BODY PROBLEM
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PERTURBATION THEORY
PHASE SHIFT
PION-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
THREE-BODY PROBLEM