Direct photon elliptic flow in Pb-Pb collisions at root S-NN=2.76 TeV

0503098 - ÚJF 2020 RIV NL eng J - Journal Article
Sas, M. - Acharya, S. - Acosta, F. T. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Horák, D. - Křížek, Filip - Kučera, Vít - Kushpil, Svetlana - Lavička, R. - Mareš, Jiří A. - Petráček, V. - Šumbera, Michal - Závada, Petr … Total 1019 authors
Direct photon elliptic flow in Pb-Pb collisions at root S-NN=2.76 TeV.
Nuclear Physics. A. Roč. 982, č. 2 (2019), s. 195-197. ISSN 0375-9474. E-ISSN 1873-1554.
[27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018). Venice, 13.05.2018-19.05.2018]
Institutional support: RVO:68378271 ; RVO:61389005
Keywords : ALICE collaboration * direct photons * elliptic flow
OECD category: Nuclear physics; Particles and field physics (FZU-D)
Impact factor: 1.695, year: 2019
Method of publishing: Open access
https://doi.org/10.1016/j.nuclphysa.2018.10.065

The elliptic flow of inclusive and direct photons was measured by ALICE for central and semi-central Pb-Pb collisions at root S-NN = 2.76 TeV. The photons were reconstructed using the electromagnetic calorimeter PHOS and the central tracking system. The inclusive photon flow reconstructed with both methods are combined and used to extract the direct photon flow, using a decay photon simulation and the direct photon excess R-gamma, in the transverse momentum range 0.9 < p(T) < 6.2 GeV/c. We find that the theoretical predictions generally under-predict the results.
Permanent Link: http://hdl.handle.net/11104/0294920