Medium-induced optical effects for prompt photons

Akihiko Monnai

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arXiv · 1408.1410

Medium-induced optical effects for prompt photons

Akihiko Monnai

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Abstract

Electromagnetic aspects of a QCD matter have been a hot topic in recent years. High-energy heavy-ion experiments revealed that flow harmonics of direct photons are not explained by most hydrodynamic models. In this work I discuss possible effects of refraction by the hot medium since it can work as a lens which converts its geometrical anisotropy into momentum anisotropy of photons. Then elliptic flow and higher-order harmonics of prompt photons are estimated numerically. The results indicate that they could be small but have phenomenologically non-trivial consequences.

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Akihiko Monnai. 2014-08-06. Medium-induced optical effects for prompt photons. https://arxiv.org/abs/1408.1410

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