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

Chun Yan Song, Jiang Ming Yao

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

The polarization effect on the spin symmetry for anti-Lambda spectrum in 16O+Λ̄ 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 pΛ̄ 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 antiLambda hyperon, which leads to a highly compressed cold nucleus with the central density up to 2 -3 times of saturated density.

Original languageEnglish
Pages (from-to)1425-1427
Number of pages3
JournalChinese Physics C
Volume34
Issue number9
DOIs
Publication statusPublished - 2010 Sep 1

Keywords

  • Hypernuclei
  • Lambda and anti-lambda
  • Relativistic mean field
  • Spin symmetry

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation
  • Astronomy and Astrophysics

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