Abstract
We report new quarkonia measurements necessary to understand production mechanisms and cold nuclear matter effects in the yields observed at RHIC energy. Results obtained in p + p collisions collected during the 2006 RHIC Run include J / ψ , ψ ′ and ϒ differential cross sections as well as J / ψ polarization. Revisited interpretations of the published J / ψ nuclear modification factors and statistically improved observations in d + Au collisions taken in the 2008 Run are also discussed in the view of the recent understanding of the initial state effects and breakup cross section.
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