Extensive particle identification with TPC and TOF at the STAR experiment

被引：91

作者：

Shao, M ^{[1
]}

Barannikova, O

Dong, X

Fisyak, Y

Ruan, LJ

Sorensen, P

Xu, ZB

机构：

[1] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China

[2] Brookhaven Natl Lab, Upton, NY 11973 USA

[3] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2006年 / 558卷 / 02期

基金：

中国国家自然科学基金;

关键词：

particle identification; TOF; TPC; dE/dx; STAR;

D O I：

10.1016/j.nima.2005.11.251

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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 root S-NN = 200 GeV and Au + Au collisions at root S-NN = 62.4 GeV are used to develop the methods. The transverse momentum ()T) ranges of pi, and p(p) identification are from similar to 0.3GeV/c to similar to 10GeV/c. 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. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：419 / 429

页数：11

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