J/Psi Polarization in 800-GeV p-Cu Interactions
Abstract
We present measurements of the polarization of the J/ produced in 800-GeV proton interactions with a copper target. Polarization of the J/ is sensitive to the c c production and hadronization processes. A longitudinal polarization is observed at large xF , while at small xF the state is produced essentially unpolarized or slightly transversely polarized. No significant variation of the polarization is observed versus pT .
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