dorsal/arxiv
View SchemaProbing the QCD equation of state with thermal photons in nucleus-nucleus collisions at RHIC
| Authors | David d'Enterria, Dmitri Peressounko |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0503054 |
| URL | https://arxiv.org/abs/nucl-th/0503054 |
| DOI | 10.1140/epjc/s2006-02504-0 |
| Journal | Eur.Phys.J.C46:451-464,2006 |
Abstract
Thermal photon production at mid-rapidity in Au+Au reactions at $\sqrt{s_{NN}}$ = 200 GeV is studied in the framework of a 2D+1 hydrodynamical model that describes efficiently the bulk identified hadron spectra at RHIC. The combined thermal plus NLO pQCD photon spectrum is in good agreement with the yields measured by the PHENIX experiment for all Au+Au centralities. Within our model, we demonstrate that the correlation of the thermal photon slopes with the charged hadron multiplicity in each centrality bin provides direct empirical information on the underlying degrees of freedom and on the equation of state, $s(T)/T^3$, of the strongly interacting matter.
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"abstract": "Thermal photon production at mid-rapidity in Au+Au reactions at\n$\\sqrt{s_{NN}}$ = 200 GeV is studied in the framework of a 2D+1 hydrodynamical\nmodel that describes efficiently the bulk identified hadron spectra at RHIC.\nThe combined thermal plus NLO pQCD photon spectrum is in good agreement with\nthe yields measured by the PHENIX experiment for all Au+Au centralities. Within\nour model, we demonstrate that the correlation of the thermal photon slopes\nwith the charged hadron multiplicity in each centrality bin provides direct\nempirical information on the underlying degrees of freedom and on the equation\nof state, $s(T)/T^3$, of the strongly interacting matter.",
"arxiv_id": "nucl-th/0503054",
"authors": [
"David d\u0027Enterria",
"Dmitri Peressounko"
],
"categories": [
"nucl-th",
"hep-ph",
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],
"doi": "10.1140/epjc/s2006-02504-0",
"journal_ref": "Eur.Phys.J.C46:451-464,2006",
"title": "Probing the QCD equation of state with thermal photons in nucleus-nucleus collisions at RHIC",
"url": "https://arxiv.org/abs/nucl-th/0503054"
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