Polarization effect on the spin symmetry for anti-Lambda spectrum in <SUP>16</SUP>O+Λ system

SONG Chun-Yan; YAO Jiang-Ming

doi:10.1088/1674-1137/34/9/061

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1425-1427 DOI: 10.1088/1674-1137/34/9/061

Polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system

SONG Chun-Yan ^, ,
YAO Jiang-Ming

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Abstract：
The polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system has been studied in relativistic mean-field theory. The PK1 effective interaction is used for nucleon-meson couplings and G-parity symmetry with a reduction factor ξ=0.3 is adopted for anti-Lambda-meson couplings. The energy differences between spin doublets in the anti-Lambda spectrum are around 0.10-0.73 MeV for p_Λ state. The dominant components of the Dirac spinor for the anti-Lambda spin doublets are found to be near identical. It indicates that the spin symmetry is still well-conserved against the polarization effect from the valence anti-Lambda hyperon, which leads to a highly compressed cold nucleus with the central density up to 2－3 times of saturated density.

References

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SONG Chun-Yan and YAO Jiang-Ming. Polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system[J]. Chinese Physics C, 2010, 34(9): 1425-1427. doi: 10.1088/1674-1137/34/9/061

SONG Chun-Yan and YAO Jiang-Ming. Polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system[J]. Chinese Physics C, 2010, 34(9): 1425-1427. doi: 10.1088/1674-1137/34/9/061 shu

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Received: 2010-02-09
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system

Corresponding author: SONG Chun-Yan,

Received Date: 2010-02-09

Accepted Date: 1900-01-01

Available Online: 2010-09-05

Abstract:

The polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system has been studied in relativistic mean-field theory. The PK1 effective interaction is used for nucleon-meson couplings and G-parity symmetry with a reduction factor ξ=0.3 is adopted for anti-Lambda-meson couplings. The energy differences between spin doublets in the anti-Lambda spectrum are around 0.10-0.73 MeV for p_Λ state. The dominant components of the Dirac spinor for the anti-Lambda spin doublets are found to be near identical. It indicates that the spin symmetry is still well-conserved against the polarization effect from the valence anti-Lambda hyperon, which leads to a highly compressed cold nucleus with the central density up to 2－3 times of saturated density.

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Polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system

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Polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system

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Polarization effect on the spin symmetry for anti-Lambda spectrum in 16O+Λ system

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Polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system

Polarization effect on the spin symmetry for anti-Lambda spectrum in ¹⁶O+Λ system