Medium-induced multi-photon radiation
Hao Ma, Carlos A. Salgado, Konrad Tywoniuk
TL;DR
This paper investigates the spectrum of multi-photon radiation emitted by a fast quark traversing a medium, focusing on the BDMPS/ASW approach and the Molière limit, revealing the LPM effect for two-photon emissions.
Contribution
It extends the understanding of medium-induced radiation by calculating the two-photon spectrum and demonstrating the LPM effect in this context.
Findings
Reproduces the one-photon radiation spectrum in dipole approximation.
Calculates the two-photon radiation spectrum in the Molière limit.
Confirms the LPM effect applies to two-photon ladder emission.
Abstract
We study the spectrum of multi-photon radiation off a fast quark in medium in the BDMPS/ASW approach. We reproduce the medium-induced one-photon radiation spectrum in dipole approximation, and go on to calculate the two-photon radiation in the Moli\`{e}re limit. We find that in this limit the LPM effect holds for medium-induced two-photon ladder emission.
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