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Extensive Particle Identification with TPC and TOF at the STAR Experiment | | M. Shao
; O. Barannikova
; X. Dong
; Y. Fisyak
; L. Ruan
; P. Sorensen
; Z. Xu
; | | Date: |
27 May 2005 | | Subject: | nucl-ex | | Abstract: | 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 $sqrt{s_{_{NN}}}=200$ GeV and Au+Au collisions at $sqrt{s_{_{NN}}}=62.4$ GeV are used to develop the methods. The transverse momentum ($p_T$) ranges of $pi$, and $p(ar{p})$ identification are from $sim0.3$ GeV/$c$ to $sim10$ GeV/$c$. 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. | | Source: | arXiv, nucl-ex/0505026 | | Services: | Forum | Review | PDF | Favorites | |
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