Gluon radiation from a QCD antenna with realistic parton-medium interactions
4 affiliations
- 1CPHT, CNRS, École polytechnique, Institut Polytechnique de Paris
- 2LIP - Laboratório de Instrumentação e Física Experimental de Partículas
- 3Universidade de Lisboa
- 4Universidade de Santiago de Compostela
Abstract
A bstract : The spectrum of coherent gluon radiation from a quark-antiquark pair undergoing multiple scatterings within a colored medium is central for understanding in-medium parton cascades. However, current efforts are constrained by reliance on a number of approximations, such as the harmonic oscillator approximation, that are only valid within limited regions of phase space. In this paper, we circumvent this problem by expressing the full in-medium gluon emission spectrum as a set of differential equations that can be solved numerically. This formalism, previously applied to the case of medium-induced radiation off a single color charge, allows to resum medium interactions to all orders while employing realistic scattering models. The resulting angle and energy distributions of emitted gluons serve to illustrate the breakdown of color coherence across the entire accessible phase-space, and constitute a definite step towards a higher-precision description of jet observables.
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BibTeX
@article{andres2026gluon,
title = {{Gluon radiation from a QCD antenna with realistic parton-medium interactions}},
author = {Carlota Andrés and Liliana Apolinário and Néstor Armesto and André Cordeiro and Fabio Domínguez and Pablo Guerrero-Rodríguez and José Guilherme Milhano},
journal = {Journal of High Energy Physics},
year = {2026},
month = oct,
doi = {10.1007/jhep10(2026)233},
url = {https://link.springer.com/article/10.1007/JHEP10(2026)233},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Gluon radiation from a QCD antenna with realistic parton-medium interactions
AU - Carlota Andrés
AU - Liliana Apolinário
AU - Néstor Armesto
AU - André Cordeiro
AU - Fabio Domínguez
AU - Pablo Guerrero-Rodríguez
AU - José Guilherme Milhano
PY - 2026
DA - 2026/10/22
JO - Journal of High Energy Physics
DO - 10.1007/jhep10(2026)233
UR - https://link.springer.com/article/10.1007/JHEP10(2026)233
AB - A bstract : The spectrum of coherent gluon radiation from a quark-antiquark pair undergoing multiple scatterings within a colored medium is central for understanding in-medium parton cascades. However, current efforts are constrained by reliance on a number of approximations, such as the harmonic oscillator approximation, that are only valid within limited regions of phase space. In this paper, we circumvent this problem by expressing the full in-medium gluon emission spectrum as a set of differential equations that can be solved numerically. This formalism, previously applied to the case of medium-induced radiation off a single color charge, allows to resum medium interactions to all orders while employing realistic scattering models. The resulting angle and energy distributions of emitted gluons serve to illustrate the breakdown of color coherence across the entire accessible phase-space, and constitute a definite step towards a higher-precision description of jet observables.
SN - 1029-8479
ER -