Measurement of Decay Parameters for ${\Xi }^{-}\to \Lambda {\pi }^{-}$ Decay

FNAL E756 Collaboration, A. Chakravorty, H. T. Diehl +14

Based on 1.35 million polarized ${\Xi }^{-}$ events, we measure the parameter ${\varphi }_{\Xi }$ to be $-1.61^{\circ }\pm 2.66^{\circ }\pm 0.37^{\circ }$ for ${\Xi }^{-}\to \Lambda {\pi }^{-}$ decay. New results for…