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arXiv 0806.0353nucl-ex
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STAR中的$J/ψ$和$Υ$测量值

$J/ψ$ and $Υ$ measurements in STAR

Mauro R. Cosentino

摘要:

在重离子碰撞中,重夸克偶素态被认为是核物质去禁闭为夸克-胶子等离子体的证据。为了获得A+A碰撞中夸克偶素产生变化的结论性信息,系统地测量p+p,d+Au和Au+Au碰撞中的$J/ψ$和$Υ$态是必要的.为了完成这一任务,STAR实验有一个夸克偶素计划,该计划基于利用大STAR接受度的特定触发设置的开发。本文给出了200 GeV p+p能区的$J/ψ$和$Υ$的初步测量结果以及200 GeV重离子碰撞中$Υ$的首次测量结果。

英文摘要:

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 $J/ψ$ and $Υ$ 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 $J/ψ$ and $Υ$ measurement in 200 GeV p+p and the first measurements of $Υ$ in 200 GeV heavy ion collisions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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