Journal
PHYSICAL REVIEW C
Volume 100, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.100.024905
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Funding
- FAPESP [2016/240296, 2017/05685-2]
- Project INCT-FNA [464898/2014-5]
- USP-COFECUB Project [Uc Ph 160-16 (2015/13)]
- La Caixa Banking Foundation
- Agence Nationale de la Recherche [ANR-16-CE31-0019-02]
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Since their discovery, fluctuations in the initial state of heavy-ion collisions have been understood as originating mostly from the random positions of nucleons within the colliding nuclei. We consider an alternative approach where all the focus is on fluctuations generated by QCD interactions that we evaluate at leading logarithmic accuracy in the color glass condensate effective theory. We validate our approach using BNL Relativistic Heavy Ion Collider (RHIC) and CERN Large Hadron Collider (LHC) data on anisotropic flow. In particular, we show that, compared to standard Glauber-inspired calculations, our formalism provides a better description of the centrality dependence of the ratio of elliptic flow and triangular flow. It also naturally explains the evolution of elliptic flow fluctuations between RHIC and LHC energies.
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