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Type: Journal article
Title: Two-frequency shell model for hypernuclei and meson-exchange hyperon-nucleon potentials
Author: Tzeng, Yiharn
Tsay Tzeng, S. Y.
Kuo, T. T. S.
Lee, T-S. H.
Stoks, V. G. J.
Citation: Physical Review C, 2000; 61(3):031305
Publisher: American Physical Society
Issue Date: 2000
ISSN: 0556-2813
School/Discipline: School of Chemistry and Physics
Statement of
Yiharn Tzeng, S. Y. Tsay Tzeng, T. T. S. Kuo, T.-S.H. Lee, and V. G. D. Stoks
Abstract: A two-frequency shell model is proposed for investigating the structure of hypernuclei starting with a hyperon-nucleon potential in free space. In a calculation using the folded-diagram method for Λ¹⁶O, the Λ single particle energy is found to have a saturation minimum at an oscillator frequency ħωΛ≈10MeV, for the Λ orbit, which is considerably smaller than ħωN=14MeV for the nucleon orbit. The spin-dependence parameters derived from the Nijmegen NSC89 and NSC97f potentials are similar, but both are rather different from those obtained with the Jülich-B potential. The ΛNN three-body interactions induced by ΛN-ΣN transitions are important for the spin parameters, but relatively unimportant for the low-lying states of Λ¹⁶O.
Rights: ©2000 The American Physical Society
DOI: 10.1103/PhysRevC.61.031305
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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