Proton emission from $\Lambda$-stable coherent (${\mathrm{K}}^{-}$, ${\pi }^{-}$) hypernuclear excitations populates low-lying levels in the daughter hypernucleus, which subsequently decay by $\gamma$ radiation. The calculation of relative yields for such proton emission is outlined and illustrated for ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$, and the significance of the corresponding $\gamma$ lines in ${}_{\Lambda }{}^{15}{}_{}{}^{}\mathrm{N}$ and ${}_{\Lambda }{}^{13}{}_{}{}^{}\mathrm{C}$ is discussed.

NUCLEAR STRUCTURE Hypernuclei; gamma transitions in light hypernuclei; spin dependence of $\Lambda N$ interaction.

• Received 21 June 1983

DOI:https://doi.org/10.1103/PhysRevC.28.2186