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 sNN=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<8.0GeV/c), collision centrality (0%-70%), and pseudorapidity (|η|<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. © 2014 CERN, for the CMS Collaboration.

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at s NN =2.76 TeV. PHYSICAL REVIEW. C, NUCLEAR PHYSICS, 89(4) [10.1103/PhysRevC.89.044906].

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

BENAGLIA, ANDREA DAVIDE;DINARDO, MAURO EMANUELE;FIORENDI, SARA;GHEZZI, ALESSIO;GOVONI, PIETRO;LUCCHINI, MARCO TOLIMAN;MANZONI, RICCARDO ANDREA;MARTELLI, ARABELLA;MORONI, LUIGI;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A;De Guio, F;
2014

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 sNN=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
Articolo in rivista - Articolo scientifico
Nuclear and High Energy Physics
English
2014
89
4
0449061
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at s NN =2.76 TeV. PHYSICAL REVIEW. C, NUCLEAR PHYSICS, 89(4) [10.1103/PhysRevC.89.044906].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/154628
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