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Main Authors: Jackson, Greg, Peigné, Stéphane, Watanabe, Kazuhiro
Format: Preprint
Published: 2023
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Online Access:https://arxiv.org/abs/2312.11650
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author Jackson, Greg
Peigné, Stéphane
Watanabe, Kazuhiro
author_facet Jackson, Greg
Peigné, Stéphane
Watanabe, Kazuhiro
contents Results are presented for the medium-induced, soft coherent radiation spectrum for all $2\to 2$ partonic channels in QCD, at leading-order in $α_s$ but beyond leading logarithmic accuracy. The general formula is valid in the full kinematic range of the underlying process, and reduces to previous results in special cases. The soft gluon radiation spectrum is expressed in terms of the color density matrix specific to each channel, quantifying the entanglement between the color components of the $2 \to 2$ production amplitude. Beyond the leading logarithm, the spectrum depends explicitly on the off-diagonal elements of this matrix, owing to the soft gluon's ability to probe the internal color structure of the parton pair.
format Preprint
id arxiv_https___arxiv_org_abs_2312_11650
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Coherent gluon radiation: beyond leading-log accuracy
Jackson, Greg
Peigné, Stéphane
Watanabe, Kazuhiro
High Energy Physics - Phenomenology
Results are presented for the medium-induced, soft coherent radiation spectrum for all $2\to 2$ partonic channels in QCD, at leading-order in $α_s$ but beyond leading logarithmic accuracy. The general formula is valid in the full kinematic range of the underlying process, and reduces to previous results in special cases. The soft gluon radiation spectrum is expressed in terms of the color density matrix specific to each channel, quantifying the entanglement between the color components of the $2 \to 2$ production amplitude. Beyond the leading logarithm, the spectrum depends explicitly on the off-diagonal elements of this matrix, owing to the soft gluon's ability to probe the internal color structure of the parton pair.
title Coherent gluon radiation: beyond leading-log accuracy
topic High Energy Physics - Phenomenology
url https://arxiv.org/abs/2312.11650