$J/ψ$ and $Υ$ measurements in STAR

Details $J/ψ$ and $Υ$ measurements in STAR $J/ψ$ and $Υ$ measurements in STAR

2008-06-02

arxiv.org/abs/0806.0353v1

Physics

Nuclear Physics

Nuclear Experiment

Proceedings for the 24th Winter Workshop on Nuclear Dynamics 6 pages, 2 figures (4 sub-figures each)

Scientific paper

Heavy-quarkonium states are expected to evidenciate the deconfinement of the nuclear matter into a Quark-Gluon Plasma in heavy-ion collisions. To strive conclusive information from quarkonium production modification in A+A collisions, systematic measurements of the $J/\psi$ and $\Upsilon$ states in p+p, d+Au and Au+Au collisions are necessary. To accomplish this mission the STAR experiment has a Quarkonium program based on the development of specific trigger setups that take advantage of the large STAR acceptance. In this work we present the preliminary results of the $J/\psi$ and $\Upsilon$ measurement in 200 GeV p+p and the first measurements of $\Upsilon$ in 200 GeV heavy ion collisions.

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