Polarization of Λ's and Λ̄'s produced by 400-GeV protons

K. Heller, P. T. Cox, J. Dworkin, O. E. Overseth, P. Skubic, L. Schachinger, T. Devlin, B. Edelman, R. T. Edwards, G. Bunce, R. Handler, R. March, P. Martin, L. Pondrom, M. Sheaff

Research output: Contribution to journalArticlepeer-review

155 Scopus citations


We have measured the polarization of 3×10;6 Λ0 and 2.5×105 Λ̄0 hyperons produced by 400-GeV protons on a beryllium target. The hyperons were detected at a fixed angle of 7.2 mrad and in the momentum range from 50 to 300 GeV/c for Λ0 and 50 to 200 GeV/c for Λ0. The Λ0 polarization agrees with that measured at 24 and 300 GeV and is - 0.24 ± 0.04 at pT=2.1 GeV/c. The Λ̄0 polarization is zero up to pT=1.2 GeV/c.

Original languageEnglish (US)
Pages (from-to)607-611
Number of pages5
JournalPhysical review letters
Issue number9
StatePublished - 1978


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