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Jet Suppression From a Small to Intermediate to Large Radius
1Institutt for fysikk og teknologi, University of Bergen, Postboks 7803, 5020 Bergen, Norway.
Physical Review Letters
|February 22, 2020
Summary
Jet suppression in heavy-ion collisions is largely independent of the measurement radius. This finding stems from competing energy loss and medium response effects in high-energy particle jets.
Area of Science:
- High-energy nuclear physics
- Quantum chromodynamics
- Particle physics
Background:
- Heavy-ion collisions create a quark-gluon plasma.
- High-energy jets are produced within this medium.
- Understanding jet-medium interaction is crucial.
Purpose of the Study:
- Predict jet suppression across various measurement radii.
- Investigate the impact of jet radius on suppression.
- Analyze the underlying physical mechanisms.
Main Methods:
- Utilizing theoretical predictions for jet quenching.
- Simulating high-energy jets in a heavy-ion collision environment.
- Employing the anti-kT jet finding algorithm.
Main Results:
- Jet suppression shows minimal dependence on the anti-kT radius (R).
- Suppression slightly increases with R initially, then slowly decreases at larger radii.
- Competing effects of energy loss and medium response drive this behavior.
Conclusions:
- Jet suppression is robust across different measurement scales.
- Medium response partially counteracts energy loss, influencing suppression.
- Theoretical models can explain observed jet quenching phenomena.
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