Jet Quenching via Jet Collimation

Details Jet Quenching via Jet Collimation Jet Quenching via Jet Collimation

2010-12-03

arxiv.org/abs/1012.0745v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 4 figures

Scientific paper

The ATLAS Collaboration recently reported strong modifications of dijet properties in heavy ion collisions. In this work, we discuss to what extent these first data constrain already the microscopic mechanism underlying jet quenching. Simple kinematic arguments lead us to identify a frequency collimation mechanism via which the medium efficiently trims away the soft components of the jet parton shower. Through this mechanism, the observed dijet asymmetry can be accomodated with values of $\hat{q}\, L$ that lie in the expected order of magnitude.

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