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Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at vsNN = 2.76 TeV

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 vsNN = 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 < pT < 8.0 GeV/c), collision centrality (0% – 70%), and pseudorapidity (|?|<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.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Phys. Rev. C, Vol. 89, Num. 4, Pag. 044906 (2014)

Editorial: American Physical Society

 Fecha de publicación: 01/04/2014

Nº de páginas: 31

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevC.89.044906

ISSN: 0556-2813,1089-490X,2469-9985,2469-9993

Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1103/PhysRevC.89.044906