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Direct photon elliptic flow in Pb-Pb collisions at √sNN = 2.76 TeV (CROSBI ID 259055)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(ALICE Collaboration) Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... et al. Direct photon elliptic flow in Pb-Pb collisions at √sNN = 2.76 TeV // Physics letters. B, 789 (2019), 308-322. doi: 10.1016/j.physletb.2018.11.039

Podaci o odgovornosti

Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zou, S.

ALICE Collaboration

engleski

Direct photon elliptic flow in Pb-Pb collisions at √sNN = 2.76 TeV

The elliptic flow of inclusive and direct photons was measured at mid-rapidity in two centrality classes 0–20% and 20–40% in Pb–Pb collisions at sNN=2.76 TeV by ALICE. Photons were detected with the highly segmented electromagnetic calorimeter PHOS and via conversions in the detector material with the e+e− pairs reconstructed in the central tracking system. The results of the two methods were combined and the direct-photon elliptic flow was extracted in the transverse momentum range pT<0.9, 6.2GeV/c>. A comparison to RHIC data shows a similar magnitude of the measured direct-photon elliptic flow. Hydrodynamic and transport model calculations are systematically lower than the data, but are found to be compatible.

photon: direct production ; photon: elliptic flow ; heavy ion: scattering ; calorimeter: electromagnetic ; Brookhaven RHIC Coll ; transverse momentum ; tracking detector ; transport theory ; hydrodynamics ; ALICE ; flow

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Podaci o izdanju

789

2019.

308-322

objavljeno

0370-2693

1873-2445

10.1016/j.physletb.2018.11.039

Povezanost rada

Fizika

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