Publication : t16/086
The fluctuations of quadrangular flow
Giacalone G. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)Yan L. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Noronha-Hostler J. (Department of Physics, University of Houston, Houston TX77204, USA)
Ollitrault J.-Y. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Abstract:Année de publication : 2017
The ATLAS Collaboration has measured for the first time the fourth cumulant of quadrangular flow, $v_4{4}^4$. Unlike the fourth cumulants of elliptic and triangular flows, it presents a change of sign above 30% centrality. We show that this change of sign is predicted by event-by-event hydrodynamics. We argue that it results from the combined effects of a nonlinear hydrodynamic response, which couples quadrangular flow to elliptic flow, and elliptic flow fluctuations.
Revue : J. Phys.: Conf. Ser. 779 012064 (2017)
Conférence - Communication : par Jean-Yves Ollitrault; Strangeness in Quark Matter 2016 ; Berkeley, Californie, USA ; 2016-06-27 / 2016-07-01
DOI : 10.1088/1742-6596/779/1/012064
Preprint : arXiv:1608.06022
Langue : Anglais
Fichier(s) à télécharger :
publi.pdf
