Deformation and weak decay of λ hypernuclei

K. Hagino, Myaing Thi Win, Y. Nakagawa

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We use the self-consistent mean-field theory to discuss the ground state and decay properties of Λ hypernuclei. We first discuss the deformation of Λ hypernuclei using the relativistic mean-field (RMF) approach. We show that, although most of the hypernuclei have a similar deformation parameter to the core nucleus, the shape of 28Si is drastically altered, from oblately deformed to spherical, if a Λ particle is added to this nucleus. We then discuss the pionic weak decay of neutron-rich Λ hypernuclei using the Skyrme Hartree-Fock + BCS method. We show that, for a given isotope chain, the decay rate increases as a function of mass number, due to the strong neutron-proton interaction.

Original languageEnglish
Pages (from-to)2552-2557
Number of pages6
JournalInternational Journal of Modern Physics E
Volume19
Issue number12
DOIs
Publication statusPublished - 2010 Dec 1

Keywords

  • Nuclear deformation
  • mean field theory
  • pionic decay

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy(all)

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