Title
Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at <tex>$\sqrt{s_{NN}}$</tex> = 2.76 TeV Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at <tex>$\sqrt{s_{NN}}$</tex> = 2.76 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : C : nuclear physics. - Lancaster, Pa, 1970 - 2015
Volume/pages
89(2014) :4 , p. 1-31
ISSN
0556-2813
1089-490X
ISI
000334301000001
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Measurements are presented by the CMS Collaboration at the Large Hadron Collider (LHC) of the higher-order harmonic coefficients that describe the azimuthal anisotropy of charged particles emitted in root s(NN) = 2.76 TeV PbPb collisions. Expressed in terms of the Fourier components of the azimuthal distribution, the n = 3-6 harmonic coefficients are presented for charged particles as a function of their transverse momentum (0.3 < p(T) < 8.0 GeV/c), collision centrality (0%-70%), and pseudorapidity (|eta| < 2.0). The data are analyzed using the event plane, multiparticle cumulant, and Lee-Yang zeros methods, which provide different sensitivities to initial-state fluctuations. Taken together with earlier LHC measurements of elliptic flow (n = 2), the results on higher-order harmonic coefficients develop a more complete picture of the collective motion in high-energy heavy-ion collisions and shed light on the properties of the produced medium.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/50db59/7578.pdf
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