High-pT electron distributions in d+Au and p+p collisions at RHIC

被引：11
|
作者：
Suaide, AAP [1 ]
机构：
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2004年 / 30卷 / 08期
关键词：
D O I：
10.1088/0954-3899/30/8/085
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We present preliminary measurements of electron and positron spectra in d + Au and p + p collisions at rootSNN = 200 GeV for 1.5 < p(T) < 7.0 GeV/c. These measurements were carried out using the STAR time projection chamber (TPC) and the barrel electromagnetic calorimeter (EMC). Overall hadron rejection factors in the range of 10(5) have been achieved. In this work, we describe the measurement technique used to discriminate electrons from hadrons and compare the results for single electron spectra with Pythia-based pQCD calculations for electrons from heavy-quark semi-leptonic decays.
引用
收藏
页码：S1179 / S1182
页数：4
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