Measurement of the Electron Asymmetry in the Beta Decay of PolarizedHyperons
- 12 April 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 48 (15), 971-974
- https://doi.org/10.1103/physrevlett.48.971
Abstract
The electron asymmetry was measured in the beta decay of polarized sigma hyperons produced in the reaction at the resonance. Particles were tracked in a magnetic spectrometer and a large-acceptance, segmented, gas-Cherenkov-scintillation counter array identified electrons. A maximum-likelihood analysis based on 193 events yields the electron asymmetry of . The result favors a positive value for which is opposite to the Cabibbo-favored sign.
Keywords
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