Hyperon halo structure of C and B isotopes

Abstract

We study the $\mathrm{\ensuremath{\Lambda}}$ hypernuclei of C and B isotopes by the Hartree-Fock model with Skyrme-type nucleon-nucleon and $\mathrm{\ensuremath{\Lambda}}$-nucleon interactions. The calculated $\mathrm{\ensuremath{\Lambda}}$ binding energies agree well with the available experiment data. We found halo structure in the $\mathrm{\ensuremath{\Lambda}}\phantom{\rule{4pt}{0ex}}1p$ state with extended wave functions beyond the nuclear surface in the light C and B isotopes. We also found the enhanced electric-dipole transition between $\mathrm{\ensuremath{\Lambda}}\phantom{\rule{0.16em}{0ex}}1p$ and $1s$ states, which could be the evidence for this hyperon halo structure.

Topics & Concepts