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arXiv · hep-ex/0007030

Search for Direct CP Violation in Non-Leptonic Decays of Charged $Ξ$ and $Λ$ Hyperons

K. B. Luk·H. T. Diehl·J. Duryea·G. Guglielmo·K. Heller·P. M. Ho·C. James·K. Johns·M. J. Longo·R. Rameika·S. Teige·G. B. Thomson
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Abstract

A search for direct CP violation in the non-leptonic decays of hyperons has been performed. In comparing the product of the decay parameters, $α_Ξα_Λ$, in terms of an asymmetry parameter, $A_{ΞΛ}$, between hyperons and anti-hyperons in the charged $Ξ\to Λπ$ and $Λ\to p π$ decay sequence, we found no evidence of direct CP violations. The parameter $A_{ΞΛ}$ was measured to be $0.012 \pm 0.014$.

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K. B. Luk, H. T. Diehl, J. Duryea, G. Guglielmo, K. Heller, P. M. Ho, C. James, K. Johns, M. J. Longo, R. Rameika, S. Teige, G. B. Thomson. 2000-07-17. Search for Direct CP Violation in Non-Leptonic Decays of Charged $Ξ$ and $Λ$ Hyperons. https://doi.org/10.1103/physrevlett.85.4860

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