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61 - Masayuki Wada 2012
We present the measurement of the $phi$(1020)$rightarrow e^{+}e^{-}$ transverse momentum spectrum and yield for $0.3 < p_{T} < 2.5$ GeV at mid-rapidity ($|y| < 1$) from the STAR experiment in Au+Au collisions at $sqrt{s_{_{NN}}} = 200$ GeV and compar e it to the yield and spectrum from the hadronic decays. We also compare the $phi$(1020) mass and width obtained by fitting Breit-Wigner function to simulated values. Particle identification based on the newly installed STAR Time-Of-Flight (TOF) detector in conjunction with energy-loss (dE/dx) based particle identification measurements from the Time Projection Chamber (TPC) are used for a clean electron and positron identification.
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