Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ TeV

The elliptic flow of inclusive and direct photons was measured by ALICE for central and semi-central Pb–Pb collisions at sNN=2.76TeV . The photons were reconstructed using the electromagnetic calorimeter PHOS and the central tracking system. The inclusive photon flow reconstructed with both methods...

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Detalles Bibliográficos
Autor principal: Sas, Mike
Lenguaje:eng
Publicado: 2018
Materias:
nucl-ex
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysa.2018.10.065
http://cds.cern.ch/record/2643292
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author Sas, Mike
author_facet Sas, Mike
author_sort Sas, Mike
collection CERN
description The elliptic flow of inclusive and direct photons was measured by ALICE for central and semi-central Pb–Pb collisions at sNN=2.76TeV . 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 γ , in the transverse momentum range 0.9 < p T < 6.2 GeV/ c . We find that the theoretical predictions generally under-predict the results.
id cern-2643292
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
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spelling cern-26432922023-03-14T17:22:22Zdoi:10.1016/j.nuclphysa.2018.10.065http://cds.cern.ch/record/2643292engSas, MikeDirect photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ TeVnucl-exNuclear Physics - ExperimentThe elliptic flow of inclusive and direct photons was measured by ALICE for central and semi-central Pb–Pb collisions at sNN=2.76TeV . 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 γ , in the transverse momentum range 0.9 < p T < 6.2 GeV/ c . We find that the theoretical predictions generally under-predict the results.The elliptic flow of inclusive and direct photons was measured by ALICE for central and semi-central Pb--Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ 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 $0.9 < p_\mathrm{T} < 6.2$ GeV/c. We find agreement to earlier results obtained at RHIC, and the theoretical predictions generally under-predict the results.arXiv:1810.03861oai:cds.cern.ch:26432922018-10-09
spellingShingle nucl-ex
Nuclear Physics - Experiment
Sas, Mike
Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ TeV
title Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ TeV
title_full Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ TeV
title_fullStr Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ TeV
title_full_unstemmed Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ TeV
title_short Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=2.76$ TeV
title_sort direct photon elliptic flow in pb-pb collisions at $\sqrt{s_{_{\mathrm{nn}}}}=2.76$ tev
topic nucl-ex
Nuclear Physics - Experiment
url https://dx.doi.org/10.1016/j.nuclphysa.2018.10.065
http://cds.cern.ch/record/2643292
work_keys_str_mv AT sasmike directphotonellipticflowinpbpbcollisionsatsqrtsmathrmnn276tev

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