Phys. Rev. D 75, 012005 (2007) [5 pages]Ξ0 and Ξ̅ 0 polarization measurements at 800 GeV/cReceived 31 July 2006; published 11 January 2007 The polarization of Ξ0 and Ξ̅ 0 hyperons produced by 800 GeV/c protons on a BeO target at a fixed targeting angle of 4.8 mrad is measured by the KTeV experiment at Fermilab. Our result of 9.7% for Ξ0 polarization shows no significant energy dependence when compared to a result obtained at 400 GeV/c production energy and at twice our targeting angle. The polarization of the Ξ̅ 0 is measured for the first time and found to be consistent with zero. We also examine the dependence of polarization on production pt. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.75.012005
DOI:
10.1103/PhysRevD.75.012005
PACS:
13.30.Ce, 14.20.Jn
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