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High Energy Physics - Phenomenology

arXiv:hep-ph/0508201 (hep-ph)
[Submitted on 18 Aug 2005 (v1), last revised 10 Jan 2006 (this version, v3)]

Title:Azimuthal Asymmetry of Direct Photons in High Energy Nuclear Collisions

Authors:Simon Turbide (McGill U.), Charles Gale (McGill U.), Rainer J. Fries (U. Minnesota)
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Abstract: We show that a sizeable azimuthal asymmetry, characterized by a coefficient v_2, is to be expected for direct photons produced in non-central high energy nuclear collisions. This signal is generated by photons radiated by jets interacting with the surrounding hot plasma. The anisotropy is out of phase by an angle $\pi/2$ with respect to that associated with the elliptic anisotropy of hadrons, leading to negative values of v_2. Such an asymmetry, if observed, could be a signature for the presence of a quark gluon plasma and would establish the importance of jet-plasma interactions as a source of electromagnetic radiation.
Comments: New title. Final version
Subjects: High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
Cite as: arXiv:hep-ph/0508201
  (or arXiv:hep-ph/0508201v3 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0508201
Journal reference: Phys.Rev.Lett. 96 (2006) 032303
Related DOI: https://doi.org/10.1103/PhysRevLett.96.032303

Submission history

From: Simon Turbide [view email]
[v1] Thu, 18 Aug 2005 19:15:28 UTC (15 KB)
[v2] Wed, 16 Nov 2005 20:13:01 UTC (18 KB)
[v3] Tue, 10 Jan 2006 19:41:51 UTC (18 KB)
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