Shell-model aspects of the p-shell hypernuclei*

Calculations using $p^ns_Y$ and $p^np_Y$ bases (Y = $\Lambda$ and $\Sigma$) have been quite successful in explaining data, $\gamma-$ray data in particular, for p-shell hypernuclei. The $p^np_Y$ basis, however, needs to be augmented by states with an $s_Y$ coupled to $1\hbar\omega$ states of the nuclear core, with the elimination of spurious center-of-mass states, to make a complete $1\hbar\omega$ hypernuclear basis. I hope to be able to show the results from such calculations which are necessary to describe the particle decay of directly produced hypernuclear states and the structure of low-energy states of non-normal parity.