First measurements of pT correlations in Au+Au collisions at 3-7.7 GeV reveal non-monotonic energy dependence in central events with 5 sigma significance, breaking 1/sqrt(N_part) scaling.
Luo, Phys
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abstract
We provide a unified description of efficiency correction and error estimation for moments of conserved quantifies in heavy-ion collisions. Moments and cumulants are expressed in terms of the factorial moments, which can be easily corrected for the efficiency effect. By deriving the covariance between factorial moments, one can obtain the general error formula for the efficiency corrected moments based on the error propagation derived from the Delta theorem. The skellam distribution based Monto Carlo simulation is used to test the Delta theorem and Bootstrap error estimation methods. The statistical errors calculated from the two methods can well reflect the statistical fluctuations of the efficiency corrected moments.
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Recent net-proton cumulant ratios from RHIC BES-II data are compared to non-critical models from Lattice QCD, HRG, hydrodynamics and UrQMD, with volume fluctuation effects noted at fixed-target energies.
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Non-Monotonicity of Transverse Momentum Correlations in Au + Au Collisions at RHIC
First measurements of pT correlations in Au+Au collisions at 3-7.7 GeV reveal non-monotonic energy dependence in central events with 5 sigma significance, breaking 1/sqrt(N_part) scaling.
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Search for the QCD Critical Point in High Energy Nuclear Collisions: A Status Report
Recent net-proton cumulant ratios from RHIC BES-II data are compared to non-critical models from Lattice QCD, HRG, hydrodynamics and UrQMD, with volume fluctuation effects noted at fixed-target energies.