2020/04/01 by Dan Wen, Wen, Dan, Kai Lin +9
Mathematics · Physics and Astronomy · #Dust and Plasma Wave Phenomena #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Statistical Methods and Bayesian Inference
paper · pdf · doi:10.48550/arxiv.2004.00528
openalex publication_date 2020/04/01 · openalex created_date 2020/04/10 · openalex updated_date 2026/07/28
In the context of event-by-event hydrodynamic description, we analyze the implications of two models characterized by distinct initial conditions. The initial energy density of the first model adopts a Gaussian-type distribution, while those of the second one are features by high energy peripheral tubes. We calibrate the initial conditions of both models so that their initial probability distribution of eccentricity are mostly identical. Subsequently, the resultant scaled probability distributions of collective flow and the correlations between flow harmonic and eccentricity coefficients are investigated. Besides, the calculations are carried out for particle correlations regarding the symmetric cumulant, mixed harmonics, and nonlinear response coefficients. Although the resultant two-particle correlations possess similar shapes, numerical calculations indicate a subtle difference between the two models. To be specific, the difference resides in more detailed observables such as the probability distributions of elliptic flow as well as Pearson correlation coefficient regarding higher-order harmonics. We discuss several essential aspects concerning the linearity and nonlinearity between initial eccentricities and final state anisotropies. Further implications are addressed.