The $\mathrm{\Lambda }$(1600): A Strange Hybrid Baryon

We use the method of QCD sum rules to investigate a possible hybrid baryon with the quantum numbers of the $\mathrm{\Lambda }$. Using a current composed of uds quarks in a color octet and a gluon, a strange hybrid, the ${\mathrm{\Lambda }}_H$ is found about 500 MeV above the $\mathrm{\Lambda }$, and we identify it as the $\mathrm{\Lambda }(1600)$. Using our sigma/glueball model we predict a large branching fraction for the ${\mathrm{\Lambda }}_H\to \mathrm{\Lambda }+\sigma (\pi \pi$ resonance), and the experimental search for this decay mode could provide a test of the hybrid nature of the $\mathrm{/}Lambda(1600)$.