Dynamical cumulants defined as original minus mixed-event cumulants remove statistical and detector-related fluctuations in AMPT simulations, leaving cleaner critical-point-sensitive signals.
The method of mixed events for higher cumulants of conserved charges
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abstract
Higher cumulants of conserved charges are sensitive observables of quantum chromodynamics phase transitions. The sample of mixed events provides a background to estimate non-critical effects of cumulants. Four possible methods for constructing the sample of mixed events are suggested. The effectiveness of each method is examined. It is showed that the method of most random or least constrain is the best, rather than the conventional method.
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hep-ph 1years
2019 1verdicts
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Subtracting non-critical fluctuations in higher cumulants of conserved charges
Dynamical cumulants defined as original minus mixed-event cumulants remove statistical and detector-related fluctuations in AMPT simulations, leaving cleaner critical-point-sensitive signals.