STAR中的波动测量
Upsilon measurement in STAR
摘要：
本文给出了sqrt（s）=200 GeV中心快度p+p碰撞中Upperdum产生的初步结果。这一测量是在STAR实验中通过Upperdance->e^+e^-衰变通道进行的。在这篇手稿中，我们描述了实验的细节，从一个专门设计的触发设置的发展，用于区分电子从强子的分析方法。得到的生产截面B*{（dsigma/dy）|（y=0）}=91（28）（22）pb与我们基于pQCD计算的预期一致。
英文摘要：
We present preliminary results of Upsilon production in p+p collisions at sqrt(s)=200 GeV at central rapidity. This measurement was performed at the STAR experiment through the Upsilon->e^+e^- decay channel. In this manuscript we describe the experimental details, from the development of a specially designed trigger setup to the analysis methods used to discriminate electrons from hadrons. The production cross-section obtained B*{(dsigma/dy)|(y=0)}=91(28)(22) pb is compatible with our expectations based on pQCD calculations.
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