Ξ0 and Ξ¯0 polarization measurements at 800GeV/c

E. Abouzaid et al. (KTeV Collaboration)
Phys. Rev. D 75, 012005 – Published 11 January 2007

Abstract

The polarization of Ξ0 and Ξ¯0 hyperons produced by 800GeV/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 400GeV/c production energy and at twice our targeting angle. The polarization of the Ξ¯0 is measured for the first time and found to be consistent with zero. We also examine the dependence of polarization on production pt.

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  • Received 31 July 2006

DOI:https://doi.org/10.1103/PhysRevD.75.012005

©2007 American Physical Society

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Vol. 75, Iss. 1 — 1 January 2007

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