Spectroscopy of the {sub {Lambda}}{sup 7}He nucleus in a three-cluster model

Journal Article · Wed Apr 15 04:00:00 EDT 2009 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778809040024· OSTI ID:21405962

Suslov, V M; Vlahovic, B ^[1]

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1. North Carolina Central University (United States)

The {sub {Lambda}}{sup 7}He hypernucleus is considered within the {sub {Lambda}}{sup 5}He + n + n cluster model. The hyperon-nucleon interaction is described by a one-boson-exchange potential that is constructed on the basis of the NSC97f model. Phenomenological potentials are used to describe the {alpha}{Lambda} and {alpha}N interactions. For the {sub {Lambda}}{sup 5}Hen interaction, use is made of the folding-model potential. The calculations of the hyperon binding energy in the ground state of the {sub {Lambda}}{sup 7}He hypernucleus on the basis of Faddeev equations in configuration space yield a result (5.35 MeV) that agrees well with preliminary experimental data (5.4 MeV). The problem of calculating the hyperon binding energy within the three-body approach is discussed. In calculating the energy spectrum of {sub {Lambda}}{sup 7}He, use is made of a version of the method of analytic continuation in the coupling constant. Low-lying excited states of this nucleus can be classified as an analog of the corresponding states of the {sup 6}He nucleus with allowance for the clustering of the {sub {Lambda}}{sup 5}He+n+n system in the {sup 6}He(J{sup {pi}})+{Lambda}(s) form.

• OSTI ID: 21405962
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 4 Vol. 72; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BINDING ENERGY
BOSON-EXCHANGE MODELS
CLUSTER MODEL
CONFIGURATION
COUPLING CONSTANTS
DATA
ENERGY
ENERGY LEVELS
ENERGY RANGE
ENERGY SPECTRA
EQUATIONS
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FADDEEV EQUATIONS
FOLDING MODEL
GROUND STATES
HADRON-HADRON INTERACTIONS
HELIUM 6
HELIUM ISOTOPES
HYPERNUCLEI
INFORMATION
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MEV RANGE
MILLISECONDS LIVING RADIOISOTOPES
NUCLEAR FRAGMENTS
NUCLEAR MODELS
NUCLEI
NUCLEON-HYPERON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE MODELS
PERIPHERAL MODELS
POTENTIALS
RADIOISOTOPES
SPECTRA
SPECTROSCOPY
THREE-BODY PROBLEM