Tuesday, February 26, 2013

1302.5970 (Jacopo Ghiglieri et al.)

Next-to-leading order thermal photon production in a weakly coupled
quark-gluon plasma
   [PDF]

Jacopo Ghiglieri, Juhee Hong, Aleksi Kurkela, Egang Lu, Guy D. Moore, Derek Teaney
We compute the next-to-leading order O(g) correction to the thermal photon production rate in a QCD plasma. The NLO contributions can be expressed in terms of gauge invariant condensates on the light cone, which are amenable to novel sum rules and Euclidean techniques. We expect these technologies to be generalizable to other NLO calculations. For the phenomenologically interesting value of alpha_s=0.3, the NLO correction represents a 20% increase and has a functional form similar to the LO result.
View original: http://arxiv.org/abs/1302.5970

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