@misc{10481/108701,
year = {2025},
month = {12},
url = {https://hdl.handle.net/10481/108701},
abstract = {We compute the double differential inclusive spectrum for the emission of a
soft gluon from a color-singlet qq¯ pair traversing a dense QCD medium. Our results extend
the existing literature by simultaneously incorporating both single hard and multiple soft
gluon exchanges between the jet and the medium — an essential ingredient for a complete
phenomenological description of jet quenching. Using the Improved Opacity Expansion
framework, we provide an analytically tractable treatment, reducing the full cross-section to
a set of simple expressions. Our analysis demonstrates that rare hard (Molière) scatterings
significantly modify the gluon spectrum at large angles, accelerating the loss of color coherence
between the initial quarks. We further quantify whether the modifications are driven by
an overall weakening of the interference term, or by more detailed modifications to the
fragmentation pattern. Our results provide a direct input for phenomenological jet quenching
studies, offering new insights into the role of color decoherence in QCD matter.},
organization = {Foundation for the Advancement of Theoretical Physics “BASIS” (24-2-1-69-1)},
organization = {MCIN/AEI - ERDF (PID2022-139466NB-C21)},
organization = {Consejería de Universidad, Investigación e Innovación / Gobierno de España / Unión Europea – NextGenerationEU  (AST22_6.5)},
publisher = {Springer Nature},
keywords = {Jets and Jet Substructure},
keywords = {Quark-Gluon Plasma},
title = {QCD antenna radiative spectrum in dense media within the Improved Opacity Expansion},
doi = {10.1007/JHEP12(2025)022},
author = {Kuzmin, Matvey V. and Silva, João},
}