Deformation and weak decay of Λ hypernuclei

K. Hagino, Myaing Thi Win, Y. Nakagawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 hy-pernuclei 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
Title of host publicationProceedings of the Sendai International Symposium
Subtitle of host publicationStrangeness in Nuclear and Hadronic Systems, SENDAI 2008
Pages260-265
Number of pages6
Publication statusPublished - 2010 Dec 1
EventSendai International Symposium on Strangeness in Nuclear and Hadronic Systems, SENDAI 2008 - Sendai, Japan
Duration: 2008 Dec 142008 Dec 18

Publication series

NameProceedings of the Sendai International Symposium: Strangeness in Nuclear and Hadronic Systems, SENDAI 2008

Other

OtherSendai International Symposium on Strangeness in Nuclear and Hadronic Systems, SENDAI 2008
CountryJapan
CitySendai
Period08/12/1408/12/18

Keywords

  • Mean field theory
  • Nuclear deformation
  • Pionic decay

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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