Direct photon elliptic flow in Pb-Pb collisions at root s(NN)=2.76 TeV

ALICE Collaboration

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

18 Цитирования (Scopus)

Аннотация

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 0.9<pT<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.

Язык оригиналаанглийский
Страницы (с-по)308-322
Число страниц15
ЖурналPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Том789
DOI
СостояниеОпубликовано - 10 фев 2019

Предметные области Scopus

  • Ядерная физика и физика высоких энергий

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