| Full text | |
| Author(s): |
Gardim, Fernando G.
;
Grassi, Frederique
;
Ishida, Pedro
;
Luzum, Matthew
;
Magalhaes, Pablo S.
;
Noronha-Hostler, Jacquelyn
Total Authors: 6
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW C; v. 97, n. 6, p. 10-pg., 2018-06-29. |
| Abstract | |
An open question in the field of heavy-ion collisions is to what extent the size of initial inhomogeneities in the system affects measured observables. Here we present a method to smooth out these inhomogeneities with minimal effect on global properties, to quantify the effect of short-range features of the initial state. We show a comparison of hydrodynamic predictions with original and smoothened initial conditions for four models of initial conditions and various observables. Integrated observables (integrated v(n), scaled v(n) distributions, normalized symmetric cumulants, event-plane correlations) as well as most differential observables [v(n)(pT)] show little dependence on the inhomogeneity sizes and instead are sensitive only to the largest-scale geometric structure. However, other differential observables such as the flow factorization ratio and subleading principal components are more sensitive to the granularity and could be a good tool to probe the short-scale dynamics of the initial stages of a heavy-ion collision, which are not currently well understood. (AU) | |
| FAPESP's process: | 16/03274-2 - Development of a 3+1 hydrodynamical code for studies of the Quark Gluon Plasma |
| Grantee: | Frédérique Marie Brigitte Sylvie Grassi |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |
| FAPESP's process: | 16/24029-6 - Investigating the strong nuclear interactions under extreme conditions |
| Grantee: | Matthew William Luzum |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 15/50438-8 - Observing the minibang through its fluctuation spectrum |
| Grantee: | Frédérique Marie Brigitte Sylvie Grassi |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 15/00011-8 - Extracting properties of the Quark Gluon Plasma from RHIC and LHC data |
| Grantee: | Frédérique Marie Brigitte Sylvie Grassi |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/05685-2 - Hadronic physics in high energy nuclear collisions |
| Grantee: | Jun Takahashi |
| Support Opportunities: | Special Projects |