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Centrality dependence of the flow angle and magnitude fluctuations from v2{2}/v2[2]

Figure Information
Scope: PWG
PWG-CF (Flow and Correlations)
Energy
5.02 TeV
System
Pb-Pb
Figure Group
Transverse momentum dependent flow vector fluctuations in Pb--Pb collisions at 5.02 TeV
Figure Image
Figure image (.eps)
CPtRef2_6_1.eps
Figure image (.pdf)
CPtRef2_6_1.pdf
Figure Caption

The centrality dependence of the lower and upper limits of the flow angle and magnitude fluctuations from v2{2}/v2[2] along with v2{2}/v2[2] itself. 

 
 
 
 
 
 
 
 
 
 
 
Detail description

Keywords: Flow, Flow vector fluctuations, Flow angle fluctuations, pT-dependent flow vector fluctuations, Pb-Pb collisions, 5.02 TeV

Using 4-particle correlations it is possible to probe the flow angle fluctuations separated from the flow magnitude fluctuations. The two effects are both presents when probing flow vector fluctuations with 2-particle correlations such as with v2{2}/v[2]. By using trigonometric double-angle formula a limit on the flow angle and magnitude fluctuations of v2{2}/v[2] can be probed.

Data sample: LHC15o

Events cuts: kInt7 trigger,  |Vz| < 10cm, V0M centrality estimator, Pileup cut, 

Track cuts: Filterbit 96, No. of TPC cluster > 70, NUA weights, Reference pT [0.2,5.0], |eta| < 0.8