ALICE CollaborationGonzález Ferreiro, Elena2020-05-082020-05-082016Adam, J., Adamová, D., Aggarwal, M.M. et al. Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √sNN=2.76 TeV. J. High Energ. Phys. 2016, 28 (2016) https://doi.org/10.1007/JHEP09(2016)0281029-8479http://hdl.handle.net/10347/22150The elliptic ow of electrons from heavy- avour hadron decays at mid-rapidity (jyj < 0.7) is measured in Pb{Pb collisions at p √sNN = 2:76TeV with ALICE at the LHC. The particle azimuthal distribution with respect to the reaction plane can be parametrized with a Fourier expansion, where the second coe cient (v2) represents the elliptic ow. The v2 coe cient of inclusive electrons is measured in three centrality classes (0{10%, 10{20% and 20{40%) with the event plane and the scalar product methods in the transverse momentum (pT) intervals 0.5{13 GeV/c and 0.5{8 GeV/c, respectively. After subtracting the background, mainly from photon conversions and Dalitz decays of neutral mesons, a positive v2 of electrons from heavy- avour hadron decays is observed in all centrality classes, with a maximum signi cance of 5:9 in the interval 2 < pT < 2.5 GeV/c in semicentral collisions (20{40%). The value of v2 decreases towards more central collisions at low and intermediate pT (0.5 < pT < 3 GeV/c). The v2 of electrons from heavy- avour hadron decays at mid-rapidity is found to be similar to the one of muons from heavy- avour hadron decays at forward rapidity (2.5 < y < 4). The results are described within uncertainties by model calculations including substantial elastic interactions of heavy quarks with an expanding strongly-interacting mediumeng© CERN, for the bene t of the ALICE Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.https://creativecommons.org/licenses/by/4.0Heavy Ion Experimentsjournal article10.1007/JHEP09(2016)028open access