Deformation of Lambda hypernuclei

Details Deformation of Lambda hypernuclei Deformation of Lambda hypernuclei

2008-08-25

arxiv.org/abs/0808.3303v1

Phys.Rev.C78:054311,2008

Physics

Nuclear Physics

Nuclear Theory

5 pages, 6 eps figures

Scientific paper

10.1103/PhysRevC.78.054311

We study the deformation property of $\Lambda$ hypernuclei using the relativistic mean field (RMF) method. We find that $^{29}_{\Lambda}$Si and $^{13}_{\Lambda}$C hypernuclei have spherical shape as a consequence of the additional $\Lambda$ particle, whereas the corresponding core nuclei, $^{28}$Si and $^{12}$C, are oblately deformed. Most of other hypernuclei have a similar deformation parameter to the core nucleus, in accordance with the previous study with the non-relativistic Skyrme-Hartree-Fock method. We discuss the sensitivity of our results to the choice of pairing interaction and to the parameter set of the RMF Lagrangian.

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