We present measurements of the polarization of the produced in 800-GeV proton interactions with a copper target. Polarization of the is sensitive to the production and hadronization processes. A longitudinal polarization is observed at large , while at small the state is produced essentially unpolarized or slightly transversely polarized. No significant variation of the polarization is observed versus .
- Received 30 July 2003
- Published 21 November 2003
© 2003 The American Physical Society