Contribution to a conference proceedings/Internal Report

PUBDB-2015-05652

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Elliptic flow of thermal photons in chemically non-equilibrated QCD medium

Monnai, A. (Corresponding author)

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-04/87

Report No.: arXiv:1410.8621

Abstract: Heavy-ion experiments have recently revealed that azimuthal momentum anisotropy -elliptic flow- of direct photons from a QCD medium is a few times larger than hydrodynamic predictions. I present a possible explanation for the enhancement based on late quark chemical equilibration. The color glass theory indicates that the medium is initially gluon-rich. Thermal photons are then mainly produced after quarks are produced, at which point large flow anisotropy is developed. The numerical estimations indicate that slow chemical equilibration visibly enhances the elliptic flow of thermal photons.

Keyword(s): photon: thermal ; photon: direct production ; momentum: anisotropy ; flow: anisotropy ; elliptic flow ; quantum chromodynamics ; quark ; hydrodynamics ; enhancement ; heavy ion ; glass ; color

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)
2. LHC/CMS Experiment (CMS)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

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Database coverage:

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Internal Report Schmidt, A. (Editor)>Extern* ; Sander, C. (Editor)DESY*
Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14)
2014Panic2014, Panic2014, HamburgHamburg, Germany, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 Hamburg : Deutsches Elektronen-Synchrotron, DESY 1-754 (2014) [10.3204/DESY-PROC-2014-04]2014     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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