@misc{10481/60086,
year = {2019},
url = {http://hdl.handle.net/10481/60086},
abstract = {Measurements of four-particle cumulants cn{4} for n = 1, 2, 3, 4 are presented using 470 μb−1 of Pb+Pb collisions at
 √sNN = 5.02 TeV with the ATLAS detector at the LHC. These cumulants provide information on the event-by-event
fluctuations of single harmonics p(vn). For the first time, a negative c1{4} is observed. The c4{4} is found to be negative in
central collisions but changes sign around 20 − 25% centrality. This behavior is consistent with a nonlinear contribution
to v4 that is proportional to v22
. c2{4} and c3{4} are calculated using two reference event classes in order to investigate
the influence of volume fluctuations. Over most of the centrality range, c2{4} and c3{4} are found to be negative, while
in the ultra-central collisions, c2{4} changes sign and becomes positive, suggesting a deviation from Gaussian behavior
in the event-by-event fluctuation of v2. The magnitudes of the sign change are also found to be dependent of the event
class definition.},
organization = {This research is supported by NSF under grant numbers PHY-1305037 and PHY-1613294.},
publisher = {Elsevier BV},
keywords = {Multi-Particle Correlation},
keywords = {Cumulants},
keywords = {Heavy-ion},
keywords = {Flow Fluctuation},
title = {Flow fluctuations in Pb+Pb collisions at √ sNN = 5.02 TeV with the ATLAS detector},
doi = {10.1016/j.nuclphysa.2018.09.012},
author = {Zhou, Mingliang and Aguilar Saavedra, Juan Antonio and Atlas Collaboration},
}