New measurement of the Λ helicity in the decay Ξ0→Λπ0

G. Bunce, R. Handler, R. March, P. Martin, L. Pondrom, M. Sheaff, K. Heller, O. E. Overseth, P. Skubic, T. Devlin, B. Edelman, R. T. Edwards, L. Schachinger, S. P. Yamin

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13 Scopus citations

Abstract

A sample of 6075 decays of unpolarized Ξ0 hyperons has been obtained in the Fermilab neutral-hyperon beam. All decay products from the sequence Ξ0→π0Λ, π0→γγ, Λ→pπ- were detected. Analysis of the proton asymmetry in the Λ decay gave αΞ0αΛ=-0.317±0.027 or αΞ0=-0.490±0.042. A comparison with the world average for αΞ- gives a ΔI=32 amplitude of 25 ± 9%.

Original languageEnglish (US)
Pages (from-to)633-640
Number of pages8
JournalPhysical Review D
Volume18
Issue number3
DOIs
StatePublished - Jan 1 1978

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