${\Omega }^{-}$ Hyperon Decay Modes with the HyperCP Experiment at Fermilab

Abstract

The HyperCP experiment (Fermilab E871) has the largest recorded sample of ${\Omega }^{-}$ hyperon decays, allowing new searches for three rare decay modes, each with five charged tracks in the final state. Results are presented for ${\Omega }^{-}\to {\Xi }^{-}{\pi }^{+}{\pi }^{-}$; ${\Omega }^{-}\to {\Xi }^0(1530){\pi }^{-}$; and the flavor-changing neutral-current decay ${\Omega }^{-}\to {\Xi }^{-}{\mu }^{+}{\mu }^{-}$. Normalization of these measurements were to the decay ${\Omega }^{-}\to \Lambda K^{-}$ with a five-track topology similar to the signal mode with the subsequent decay of $\Lambda \to p{\pi }^{-}$ and $K^{-}\to {\pi }^{-}{\pi }^{+}{\pi }^{-}$ in the decay volume.

Presented at the 5th International Conference on Hyperons, Charm and Beauty Hadrons, June 2002., Vancouver, Canada: 4 pages, 5 figures, New Results

References in corpus (1)

• A Measurement of the Branching Ratio and Asymmetry of the Decay Cascade^0-->Sigma^0/gamma

Cited by in corpus (2)

• The Decay Omega^- -> Xi^- pi^+ pi^- in Chiral Perturbation Theory
• Rare ${\Omega }^{-}\to \Xi (1530{)}^0{\pi }^{-}$ decay in the Skyrme model