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Conformal Anomaly as a Source of Soft Photons in Heavy Ion Collisions

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Başar, Gökçe, Kharzeev, Dmitri E., Skokov, Vladimir·2012·Physical Review Letters

Abstract

We introduce a novel photon production mechanism stemming from the conformal anomaly of QCD×QED and the existence of strong (electro)magnetic fields in heavy ion collisions. Using the hydrodynamical description of the bulk modes of QCD plasma, we show that this mechanism leads to the photon production yield that is comparable to the yield from conventional sources. This mechanism also provides a significant positive contribution to the azimuthal anisotropy of photons, v(2), as well as to the radial "flow." We compare our results to the data from the PHENIX Collaboration.

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Metadata

Authors
Başar, G., Kharzeev, D. E., & Skokov, V.
Venue
Physical Review Letters
Published
2012-11-15
Volume
109
Issue
20
Pages
202303-202303
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2028917560
Cited by
166
References
2
FWCI
8.34
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Conformal Anomaly as a Source of Soft Photons in Heavy Ion Collisions. https://app.cochat.ai/papers/10.1103/physrevlett.109.202303
The paper
Başar, G., Kharzeev, D. E., & Skokov, V. (2012). Conformal Anomaly as a Source of Soft Photons in Heavy Ion Collisions. Physical Review Letters. https://doi.org/10.1103/physrevlett.109.202303

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.