Polarization of Ξ- and Ω- hyperons produced from neutral beams

D. M. Woods, P. M. Border, D. P. Ciampa, G. Guglielmo, K. J. Heller, N. B. Wallace, K. A. Johns, Y. T. Gao, M. J. Longo, R. Rameika

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5 Scopus citations

Abstract

We have studied the polarization of Ξ- and Ω- hyperons produced by high energy neutral particle beams. An unpolarized neutral beam striking a target at ±1.8 mrad produced 1.4×107Ξ-‘s with an average momentum of 395 GeV/c which were unpolarized, within a sensitivity limit of 0.007, and 2.2 × 2.2 × 105 Ω-‘s with a polarization of +0.042±0.007 at an average momentum of 374 GeV/c. A polarized neutral beam striking a target at 0.0 mrad produced 7.1×105Ξ-‘s which had a polarization of -0.118±0.004 at an average momentum of 393 GeV/c and 1.8 × 104 Ω-‘s with a polarization of -0.069±0.023 at an average momentum of 394 GeV/c. The polarized neutral beam measurement is in good agreement with a previous measurement. The unpolarized neutral beam results are not understood in the context of the current models of hyperon polarization.

Original languageEnglish (US)
Pages (from-to)6610-6619
Number of pages10
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume54
Issue number11
DOIs
StatePublished - Jan 1 1996

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Woods, D. M., Border, P. M., Ciampa, D. P., Guglielmo, G., Heller, K. J., Wallace, N. B., Johns, K. A., Gao, Y. T., Longo, M. J., & Rameika, R. (1996). Polarization of Ξ- and Ω- hyperons produced from neutral beams. Physical Review D - Particles, Fields, Gravitation and Cosmology, 54(11), 6610-6619. https://doi.org/10.1103/PhysRevD.54.6610