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p(T)-dependent particle number fluctuations from principal-component analyses in hydrodynamic simulations of heavy-ion collisions

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Author(s):
Gardim, Fernando G. ; Grassi, Frederique ; Ishida, Pedro ; Luzum, Matthew ; Ollitrault, Jean-Yves
Total Authors: 5
Document type: Journal article
Source: PHYSICAL REVIEW C; v. 100, n. 5, p. 6-pg., 2019-11-14.
Abstract

We carry out a principal component analysis of fluctuations in a hydrodynamic simulation of heavy-ion collisions, and compare with experimental data from the CMS Collaboration. The principal components of anisotropic flow reproduce the trends seen in data, but multiplicity fluctuations show a difference in transverse momentum dependence. We construct an analytical toy model and verify that hydrodynamic simulations agree with its predictions. The difference in the momentum trend is likely due to larger fluctuations in transverse momentum of hydrodynamic models than seen experimentally. (AU)

FAPESP's process: 18/18075-0 - PCA method in high energy nuclear collisions
Grantee:Frédérique Marie Brigitte Sylvie Grassi
Support Opportunities: Scholarships abroad - Research
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: 17/05685-2 - Hadronic physics in high energy nuclear collisions
Grantee:Jun Takahashi
Support Opportunities: Special Projects