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Title
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Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at = 2.76 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Physical review : C : nuclear physics. - Lancaster, Pa, 1970 - 2015
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Publication
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Lancaster, Pa
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2014
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ISSN
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0556-2813
[print]
1089-490X
[online]
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DOI
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10.1103/PHYSREVC.89.044906
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Volume/pages
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89
:4
(2014)
, p. 1-31
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ISI
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000334301000001
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Full text (Publisher's DOI)
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Full text (open access)
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