Study of the rare hyperon decay Omega \to Xi π^+ π^-

HyperCP Collaboration, O. Kamaev, N. Solomey +30

We report a new measurement of the decay Ω^- \to Ξ^- π^+ π^- with 76 events and a first observation of the decay Ω^+ \to Ξ^+ π^+ π^- with 24 events, yielding a combined branching r…