Phys. Rev. C 75, 059801 (2007) [2 pages]

Comment on “Nonperturbative finite T broadening of the ρ meson and dilepton emission in heavy-ion collisions”

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Felix Riek^1,*, Hendrik van Hees^2,†, and Jörn Knoll^1,‡
¹Gesellschaft für Schwerionenforschung mbH, Planckstr. 1, D-64291 Darmstadt, Germany
²Cyclotron Institute, Texas A&M University, College Station, Texas 77843-3366, USA

Received 12 July 2006; published 10 May 2007

In this Comment we point out several problems concerning kinematical singularities which are encountered in the calculation of the dilepton rates by Ruppert and Renk [Phys. Rev. C 71, 064903 (2005)]. We also comment on the method introduced by van Hees and Knoll [Nucl. Phys. A683, 369 (2000)] and further used by Ruppert and Renk [Phys. Rev. C 71, 064903 (2005)], Renk and Ruppert (arXiv:hep-ph/0603110, arXiv:hep-ph/0605130), and Riek and Knoll [Nucl. Phys. A740, 287 (2004)].

URL:

http://link.aps.org/doi/10.1103/PhysRevC.75.059801

DOI:

10.1103/PhysRevC.75.059801

PACS:

21.65.+f, 12.40.Yx

^*Electronic address: F.Riek@gsi.de

^†Electronic address: hees@comp.tamu.edu

^‡Electronic address: J.Knoll@gsi.de

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Phys. Rev. C 75, 059801 (2007) [2 pages]

Comment on “Nonperturbative finite T broadening of the ρ meson and dilepton emission in heavy-ion collisions”

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