Importance of separated efficiencies between positively and negatively charged particles for cumulant calculations
Abstract
We show the importance of separated efficiency corrections between positively and negatively charged particles for cumulant calculations by Monte Carlo toy models and analytical calculations. Our results indicate that Sσ in published net-proton results from the STAR experiment will be suppressed about 5 to 10% in central collisions, and 10 to 20% in peripheral collisions at the beam energy of sNN = 62.4 and 200 GeV if the separated efficiencies are used to efficiency correction.
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