The degenerate spin-flip doublet (3{sup +}/2,5{sup +}/2) of {sub {lambda}}{sup 9}Be

Journal Article · Fri May 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.054321· OSTI ID:21286943

Shoeb, Mohammad; Sonika, ^[1]

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1. Department of Physics, Aligarh Muslim University, Aligarh 202 002 (India)

The energy of the degenerate doublet (3{sup +}/2,5{sup +}/2) of {sub {lambda}}{sup 9}Be, treating it as a partially nine-body system in the {lambda}{alpha}{alpha} cluster model, has been calculated in the variational Monte Carlo framework. A simplified treatment, with the central two-body Urbana type {lambda}N and the three-body dispersive and two-pion exchange {lambda}NN forces along with the central two- and three-body correlations, is found to be adequate in explaining the energy of observed {gamma}-ray transition from the excited degenerate doublet to the ground state. The hypernucleus {sub {lambda}}{sup 9}Be is highly deformed and has an oblate shape in the excited state. The results of the present work are consistent with the earlier three-body cluster model analyzes of {sub {lambda}}{sup 9}Be.

• OSTI ID: 21286943
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 9
CLUSTER MODEL
COMPUTERIZED SIMULATION
CORRELATIONS
EXCITED STATES
GAMMA RADIATION
GROUND STATES
HYPERNUCLEI
LAMBDA PARTICLES
MONTE CARLO METHOD
PIONS
SPIN FLIP
THREE-BODY PROBLEM
VARIATIONAL METHODS