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arXiv · 1210.7610

Jet structure in 2.76 TeV Pb Pb collisions at ALICE

ALICE Collaboration
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Abstract

We present the analysis of the semi-inclusive distribution of reconstructed charged particle jets recoiling from a high pT hadron trigger in central Pb Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV. We measure, subtract and unfold the large underlying event background in such collisions, utilizing a novel technique that does not impose fragmentation bias on the measured jet population. The Pb Pb measurements are compared to a pp PYTHIA reference distribution generated at the same $\sqrt{s}$. Modification of jet structure due to quenching is explored by varying the cone radius $R$ (0.2, 0.4) and the lower pT cutoff of charged particle constituents (0.15, 2.0 GeV/$c$).

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ALICE Collaboration. 2012-10-29. Jet structure in 2.76 TeV Pb Pb collisions at ALICE. https://arxiv.org/abs/1210.7610

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