Extensive particle identification with TPC and TOF at the STAR experiment

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• 作者：Ming Shao ; Olga Barannikova ; Xin Dong ; Yuri Fisyak ; Lijuan Ruan ; Paul Sorensen and Zhangbu Xu
• 关键词：Particle identification ; TOF ; TPC ; ; none ; color ; black"" href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TJM-4J026MC-2&_mathId=mml166&_user=10&_cdi=5314&_rdoc=5&_handle=V-WA-A-W-BU-MsSAYZW-UUA-U-AAVCBVCEUC-AA
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2006
• 出版时间：15 March 2006
• 年：2006
• 卷：558
• 期：2
• 页码：419-429
• 全文大小：574 K

文摘

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 and Au+Au collisions at are used to develop the methods. The transverse momentum (p_T) ranges of π, and identification are from to . The high p_T reach 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.