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, Kenneth A 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 - Particles, Fields, Gravitation and Cosmology
Volume44
Issue number11
DOIs
StatePublished - 1991

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magnetic moments
moments
hyperons
protons
polarization
invariance
decay

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Measurement of the polarization and magnetic moment of antihyperons produced by 800-GeV/c protons. / Ho, P. M.; Longo, M. J.; Nguyen, A.; Luk, K. B.; James, C.; Rameika, R.; Duryea, J.; Guglielmo, G.; Heller, K.; Johns, Kenneth A; Diehl, H. T.; Teige, S.; Thomson, G. B.; Zou, Y.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 44, No. 11, 1991, p. 3402-3418.

Research output: Contribution to journalArticle

Ho, PM, Longo, MJ, Nguyen, A, Luk, KB, James, C, Rameika, R, Duryea, J, Guglielmo, G, Heller, K, Johns, KA, Diehl, HT, Teige, S, Thomson, GB & Zou, Y 1991, 'Measurement of the polarization and magnetic moment of antihyperons produced by 800-GeV/c protons', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 44, no. 11, pp. 3402-3418. https://doi.org/10.1103/PhysRevD.44.3402
Ho, P. M. ; Longo, M. J. ; Nguyen, A. ; Luk, K. B. ; James, C. ; Rameika, R. ; Duryea, J. ; Guglielmo, G. ; Heller, K. ; Johns, Kenneth A ; Diehl, H. T. ; Teige, S. ; Thomson, G. B. ; Zou, Y. / Measurement of the polarization and magnetic moment of antihyperons produced by 800-GeV/c protons. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 1991 ; Vol. 44, No. 11. pp. 3402-3418.
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AU - Ho, P. M.

AU - Longo, M. J.

AU - Nguyen, A.

AU - Luk, K. B.

AU - James, C.

AU - Rameika, R.

AU - Duryea, J.

AU - Guglielmo, G.

AU - Heller, K.

AU - Johns, Kenneth A

AU - Diehl, H. T.

AU - Teige, S.

AU - Thomson, G. B.

AU - Zou, Y.

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AB - 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.

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