Collimation of energy in medium-modified QCD jets
Redamy Perez Ramos (YFL, IFIC), Vincent Mathieu (ECT)
TL;DR
This paper studies how the energy distribution within QCD jets changes when they pass through a medium, showing that jets become less collimated due to medium effects, using modified DGLAP evolution equations.
Contribution
It introduces a slight modification to DGLAP equations to account for medium effects, providing a theoretical framework for jet energy collimation in QCD media.
Findings
Jet energy distribution broadens in QCD media
Medium effects reduce jet collimation
Modified DGLAP equations describe medium influence
Abstract
The collimation of energy inside medium-modified jets is investigated in the leading logarithmic approximation of QCD. The Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution equations are slightly modified by introducing splitting functions enhanced in the infrared sector. As compared to elementary collisions in the vacuum, the angular istribution of the jet energy is found to broaden in QCD media.
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