Naslov
Higher Harmonic Anisotropic Flow Measurements of Charged Particles in Pb-Pb Collisions at sqrt(sNN) = 2.76 TeV

Autori
Aamodt, K. ; ... ; Antičić, Tome ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Šuša, Tatjana ; ... ; Vicković, Linda ; ... ; Zynovyev, M. (ALICE Collaboration)

Izvornik
Physical Review Letters (0031-9007) 107 (2011); 032301-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
LHC; ALICE; Pb+Pb; 2.76 TeV anisotropic flow; higher harmonics

Sažetak
We report on the first measurement of the triangular v3, quadrangular v4, and pentagonal v5 charged particle flow in Pb-Pb collisions at sqrt(sNN) = 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 v2 and v3 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA