Extensive particle identification with TPC and TOF at the STAR experiment
Extensive particle identification with TPC and TOF at the STAR experiment
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DOI：
10.1016/j.nima.2005.11.251
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发表时间：
2005-05
影响因子：
1.4
通讯作者：
M. Shao;M. Shao;O. Barannikova;Xin Dong;Xin Dong;Y. Fisyak;L. Ruan;L. Ruan;P. Sorensen;Zhangbu Xu
中科院分区：
文献类型：
--
作者：
M. Shao;M. Shao;O. Barannikova;Xin Dong;Xin Dong;Y. Fisyak;L. Ruan;L. Ruan;P. Sorensen;Zhangbu Xu
在星星上，利用时间投影室（TPC）和飞行时间（TOF）探测器研究了粒子识别（PID）能力。与TPC和TOF分别实现的带电强子的识别能力相比，该方法大大扩展了带电强子的识别能力。用sNN= 200 GeV的p+p，d+Au碰撞和sNN= 62.4 GeV的Au+Au碰撞的粒子谱来发展这些方法。π和p（p ′）的横向动量（pT）识别范围为0.3GeV/c ~ 0.10GeV/c。高pTreach受到当前数据集中统计数据的限制。利用TPC中的dE/dx和TOF探测器的速度信息识别电子是一个重要的概念性进展，这对星星未来的低质量双轻子计划具有重要意义。
Particle identification (PID) capabilities are studied by using the Time Projection Chamber (TPC) and a Time-Of-Flight (TOF) detector together at STAR. The identification capability of charged hadrons is greatly extended compared with that achieved by TPC and TOF separately. Particle spectra from p+p, d+Au collisions at sNN=200GeV and Au+Au collisions at sNN=62.4GeV are used to develop the methods. The transverse momentum (pT) ranges of π, and p(p¯) identification are from ∼0.3GeV/c to ∼10GeV/c. The high pTreach is limited by statistics in current data sets. An important conceptual advance was developed to identify electrons by using a combination of dE/dx in TPC and velocity information from the TOF detectors, which is important for future low-mass dilepton program at STAR.