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

作者：Derendarz Dominik^*

来源：Nuclear Physics A, 2013, 904: 373C-376C.

DOI：10.1016/j.nuclphysa.2013.02.027

Anisotropy coefficients v are important observables for studying the hot and dense medium created in heavy-ion collisions. This report presents a comprehensive measurement of the coefficients v(2) - v(6) in the broad transverse momentum, pseudorapidity and centrality ranges using Pb-Pb collisions data at root S-NN = 2.76 TeV 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 v 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 v(n) harmonics was measured for the considered centrality and transverse momentum ranges.

• 出版日期2013-5-2