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1811094144751239168
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MIT
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The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity (|y| < 0.7) is measured in Pb-Pb collisions at √sNN = 2.76 TeV 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 coefficient (v₂) represents the elliptic flow. The v₂ coefficient 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 (p[subscript T]) 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-flavour hadron decays is observed in all centrality classes, with a maximum significance of 5.9σ in the interval 2 < p[subscript T] < 2.5 GeV/c in semi-central collisions (20–40%). The value of v₂ decreases towards more central collisions at low and intermediate p[subscript T] (0.5 < p[subscript T] < 3 GeV/c). The v₂ of electrons from heavy-flavour hadron decays at mid-rapidity is found to be similar to the one of muons from heavy-flavour 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 medium.
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2024-09-23T15:55:41Z
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Article
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mit-1721.1/115291
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Massachusetts Institute of Technology
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2024-09-23T15:55:41Z
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2018
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Springer Nature
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dspace
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mit-1721.1/1152912022-10-02T05:07:22Z Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √s NN = 2.76 TeV The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity (|y| < 0.7) is measured in Pb-Pb collisions at √sNN = 2.76 TeV 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 coefficient (v₂) represents the elliptic flow. The v₂ coefficient 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 (p[subscript T]) 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-flavour hadron decays is observed in all centrality classes, with a maximum significance of 5.9σ in the interval 2 < p[subscript T] < 2.5 GeV/c in semi-central collisions (20–40%). The value of v₂ decreases towards more central collisions at low and intermediate p[subscript T] (0.5 < p[subscript T] < 3 GeV/c). The v₂ of electrons from heavy-flavour hadron decays at mid-rapidity is found to be similar to the one of muons from heavy-flavour 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 medium. 2018-05-10T15:34:21Z 2018-05-10T15:34:21Z 2018-05-10 2018-04-27T18:35:14Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 http://hdl.handle.net/1721.1/115291 Adam, J. et al. “Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √s NN = 2.76 TeV.” Journal of High Energy Physics 2016, 9 (September 2016): 28 © 2016 The Author(s) http://dx.doi.org/10.1007/JHEP09(2016)028 Journal of High Energy Physics Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer Nature Springer
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| spellingShingle |
Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √s NN = 2.76 TeV
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| title |
Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √s NN = 2.76 TeV
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| title_full |
Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √s NN = 2.76 TeV
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| title_fullStr |
Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √s NN = 2.76 TeV
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| title_full_unstemmed |
Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √s NN = 2.76 TeV
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| title_short |
Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √s NN = 2.76 TeV
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| title_sort |
elliptic flow of electrons from heavy flavour hadron decays at mid rapidity in pb pb collisions at √s nn 2 76 tev
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| url |
http://hdl.handle.net/1721.1/115291
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