Initial Stages 2019

Linear and non-linear response of two-particle correlations to initial-geometry fluctuations

25 Jun 2019, 16:08

1m

8th floor Theory Center (Pupin)

Poster Initial conditions for hydrodynamics & transport coefficients Posters

Speaker

Dr Mauricio Hippert (Universidade de Sao Paulo)

Description

We investigate the importance of different features of the initial geometry to anisotropic flow fluctuations in heavy-ion collisions. To that end, we explore the hydrodynamic response of differential flow harmonics $v_n(p_T)$ to generalized eccentricities ${ϵ}_{n,m}$ of the initial density profile within a realistic hydrodynamic model. Special attention is paid to two-particle angular correlations, characterized in detail by the principal-component analysis (PCA). We address the relevance of non-linear response, as well as the stability of the results against the inclusion of extra eccentricities. Additionally, we study new effects from multiplicity fluctuations, which could lead to redundancies in the experimental PCA data.

Presentation materials

PosterHippertIS2019_v1.2.pdf