Higher Harmonic Anisotropic Flow Measurements of Charged Particles in Pb-Pb Collisions at root s(NN)=2.76 TeV

0376759 - ÚJF 2013 RIV US eng J - Článek v odborném periodiku
Aamodt, K. - Abelev, B. - Quintana, A.A. - Adamová, Dagmar - Bielčíková, Jana - Kushpil, Svetlana - Kushpil, Vasilij - Mareš, Jiří A. - Polák, Karel - Šumbera, Michal - Závada, Petr … celkem 782 autorů
Higher Harmonic Anisotropic Flow Measurements of Charged Particles in Pb-Pb Collisions at root s(NN)=2.76 TeV.
Physical Review Letters. Roč. 107, č. 3 (2011), 032301/1-032301/9. ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA MŠMT LC07048
Výzkumný záměr: CEZ:AV0Z10480505; CEZ:AV0Z10100521
Klíčová slova: RELATIVISTIC NUCLEAR COLLISIONS * ELLIPTIC FLOW * ENERGY
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií; BF - Elementární částice a fyzika vys. energií (FZU-D)
Impakt faktor: 7.370, rok: 2011

We report on the first measurement of the triangular nu(3), quadrangular nu(4), and pentagonal nu(5) charged particle flow in Pb-Pb collisions at root s(NN) = 2.76 TeV measured with the ALICE detector at the CERN Large Hadron Collider. We show that the triangular flow can be described in terms of the initial spatial anisotropy and its fluctuations, which provides strong constraints on its origin. In the most central events, where the elliptic flow nu(2) and nu(3) have similar magnitude, a double peaked structure in the two-particle azimuthal correlations is observed, which is often interpreted as a Mach cone response to fast partons. We show that this structure can be naturally explained from the measured anisotropic flow Fourier coefficients.
Trvalý link: http://hdl.handle.net/11104/0209080