Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √sNN = 2.76 TeV

Adam, J.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Simatović, Goran; ...; Utrobičić, Antonija; ...; Vicković, Linda; ...; Zyzak, M.

doi:10.1007/JHEP09(2016)028

Pregled bibliografske jedinice broj: 860742

Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √sNN = 2.76 TeV

(ALICE Collaboration) Adam, J.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Mudnić, Eugen; ... et al.

Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √sNN = 2.76 TeV // The Journal of high energy physics, 2016 (2016), 9; 28, 40 doi:10.1007/JHEP09(2016)028 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 860742 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √sNN = 2.76 TeV

Autori
Adam, J. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zyzak, M.

Kolaboracija
ALICE Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 2016 (2016), 9; 28, 40

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
elliptic flow ; electrons ; mid-rapidity ; lead-lead

Sažetak
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 (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-flavour hadron decays is observed in all centrality classes, with a maximum significance of 5.9σ in the interval 2< pT < 2.5 GeV/c in semi-central 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-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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Filip Erhardt (autor)