Measurement of the polarization and magnetic moment of antihyperons produced by 800-GeV/c protons

P. M. Ho, M. J. Longo, A. Nguyen, K. B. Luk, C. James, R. Rameika, J. Duryea, G. Guglielmo, K. Heller, K. Johns, H. T. Diehl, S. Teige, G. B. Thomson, Y. Zou

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Abstract

The polarization of hyperons produced by 800-GeV/c protons in the inclusive reaction p+Be+X has been measured using a sample of 70 000 decays. The average polarization of the , at a mean xF=0.39 and pt=0.76 GeV/c, is -0.0970.0120.009, compared to -0.1020.0120.010 for the -. The large polarization found for the is not expected in any model for polarization of inclusively produced hyperons. The magnetic moment of the was measured to be 0.6570.0280.020 nuclear magnetons (N), compared to (-0.6740.0210.020)N for the -, in good agreement with CPT invariance.

Original languageEnglish (US)
Pages (from-to)3402-3418
Number of pages17
JournalPhysical Review D
Volume44
Issue number11
DOIs
StatePublished - 1991

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    Ho, P. M., Longo, M. J., Nguyen, A., Luk, K. B., James, C., Rameika, R., Duryea, J., Guglielmo, G., Heller, K., Johns, K., Diehl, H. T., Teige, S., Thomson, G. B., & Zou, Y. (1991). Measurement of the polarization and magnetic moment of antihyperons produced by 800-GeV/c protons. Physical Review D, 44(11), 3402-3418. https://doi.org/10.1103/PhysRevD.44.3402