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Cluster model theory of the /sub. lambda. //sup 9/Be hypernucleus

Journal Article · · Phys. Rev. C; (United States)
; ; ;

The microscopic (..cap alpha..+3N+N)+..lambda.. cluster model is applied to achieve a unified understanding of the /sub ..lambda..//sup 9/Be hypernucleus in the energy region up to E/sub ..lambda../approx. =20 MeV. The eigenstates of /sub ..lambda..//sup 9/Be consist of low-lying cluster states with /sup 8/Be (..cap alpha..+..cap alpha..)+..lambda.. structure and high-lying core-excited states with /sup 8/Be* (..cap alpha..+..cap alpha..)+..lambda.. structure (* denotes the intrinsic) excited state). With use of the /sub ..lambda..//sup 9/Be wave functions obtained, the production cross sections of /sub ..lambda..//sup 9/Be through the (K/sup -/ in-flight,..pi../sup -/), (..pi../sup +/,K/sup +/), and (K/sup -/ stopped,..pi../sup -/) reactions are evaluated. Each reaction process shows its own selective population of states and hence contributes to the comprehensive test of the theoretical predictions. A quantitative understanding is obtained for the three-peak structure observed in the (K/sup -/ in-flight,..pi../sup -/) reaction experiment. The predicted (..pi../sup +/,K/sup +/) excitation function is in good agreement with recent experimental data, and for the first time genuine hypernuclear states came into observation.

Research Organization:
Institute for Nuclear Study, University of Tokyo, Tanashi 188, Japan
OSTI ID:
7136257
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:2; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BARYONS
BERYLLIUM 9
BERYLLIUM 9 TARGET
BERYLLIUM ISOTOPES
BOSONS
CHARGED-PARTICLE REACTIONS
CLUSTER MODEL
EIGENSTATES
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-ODD NUCLEI
FERMIONS
FUNCTIONS
HADRON REACTIONS
HADRONS
HYPERNUCLEI
HYPERONS
ISOTOPES
KAON MINUS REACTIONS
KAON REACTIONS
KAONS
KAONS PLUS
LAMBDA BARYONS
LAMBDA PARTICLES
LIGHT NUCLEI
MATHEMATICAL MODELS
MESON REACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR FRAGMENTS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PION PLUS REACTIONS
PION REACTIONS
PIONS
PIONS MINUS
PSEUDOSCALAR MESONS
STABLE ISOTOPES
STRANGE MESONS
STRANGE PARTICLES
STRANGENESS
TARGETS
WAVE FUNCTIONS