TY  - JOUR
AU  - ATLAS Collaboration (Aad, G. et al
AU  - Cabrera Urban, S.
AU  - Castillo Gimenez, V.
AU  - Costa, M. J.
AU  - Ferrer, A.
AU  - Fiorini, L.
AU  - Fuster, J.
AU  - Garcia, C.
AU  - Garcia Navarro, J. E.
AU  - Gonzalez de la Hoz, S.
AU  - Hernandez Jimenez, Y.
AU  - Higon-Rodriguez, E.
AU  - Irles Quiles, A.
AU  - Kaci, M.
AU  - King, M.
AU  - Lacasta, C.
AU  - Lacuesta, V. R.
AU  - Marti-Garcia, S.
AU  - Mitsou, V. A.
AU  - Moles-Valls, R.
AU  - Oliver Garcia, E.
AU  - Pedraza Lopez, S.
AU  - Perez Garcia-Estañ, M. T.
AU  - Romero Adam, E.
AU  - Ros, E.
AU  - Salt, J.
AU  - Sanchez Martinez, V.
AU  - Soldevila, U.
AU  - Sanchez, J.
AU  - Torro Pastor, E.
AU  - Valero, A.
AU  - Valladolid Gallego, E.
AU  - Valls Ferrer, J. A.
AU  - Vos, M.
PY  - 2014
DA  - 2014//
TI  - Measurement of flow harmonics with multi-particle cumulants in Pb plus Pb collisions at root(NN)-N-S=2.76 TeV with the ATLAS detector
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 3157 - 28pp
VL  - 74
IS  - 11
PB  - Springer
AB  - ATLAS measurements of the azimuthal anisotropy in lead-lead collisions at root(NN)-N-S = 2.76 TeV are shown using a dataset of approximately 7 μb(-1) collected at the LHC in 2010. The measurements are performed for charged particles with transverse momenta 0.5 < p(T) < 20 GeV and in the pseudorapidity range vertical bar eta vertical bar < 2.5. The anisotropy is characterized by the Fourier coefficients, vn, of the charged-particle azimuthal angle distribution for n = 2-4. The Fourier coefficients are evaluated using multi-particle cumulants calculated with the generating function method. Results on the transverse momentum, pseudorapidity and centrality dependence of the v(n) coefficients are presented. The elliptic flow, v(2), is obtained from the two-, four-, six-and eight-particle cumulants while higher-order coefficients, v(3) and v(4), are determined with two-and four-particle cumulants. Flow harmonics v(n) measured with four-particle cumulants are significantly reduced compared to the measurement involving two-particle cumulants. A comparison to v(n) measurements obtained using different analysis methods and previously reported by the LHC experiments is also shown. Results of measurements of flow fluctuations evaluated with multiparticle cumulants are shown as a function of transverse momentum and the collision centrality. Models of the initial spatial geometry and its fluctuations fail to describe the flow fluctuations measurements.
SN  - 1434-6044
UR  - http://arxiv.org/abs/1408.4342
UR  - https://doi.org/10.1140/epjc/s10052-014-3157-z
DO  - 10.1140/epjc/s10052-014-3157-z
LA  - English
N1  - WOS:000347177000001
ID  - ATLASCollaborationAad_etal2014
ER  -