Measurements of elliptic flow and higher-order flow harmonics in 2.76 TeV Pb–Pb collisions with the ATLAS detector

Anisotropy coefficients image are important observables for studying the hot and dense medium created in heavy-ion collisions. This report presents a comprehensive measurement of the coefficients image in the broad transverse momentum, pseudorapidity and centrality ranges using Pb–Pb collisions data at image from the ATLAS experiment at the LHC. The measurements are done using the event plane and two-particle correlation methods. Both techniques lead to consistent results, showing rising image at low transverse momenta, then decreasing in the range 3–8 GeV and a weak dependence at the highest transverse momenta. Weak pseudorapidity dependence of image harmonics was measured for the considered centrality and transverse momentum ranges.