Measurements of jets and jet properties in $\sqrt{s_{NN}} = 2.76$ TeV lead-lead collisions with the ATLAS detector at the LHC

TL;DR

This paper reports on measurements of jets and their properties in lead-lead collisions at 2.76 TeV using the ATLAS detector, providing insights into jet quenching phenomena in quark-gluon plasma.

Contribution

It presents new measurements of jet production and fragmentation in heavy ion collisions at the LHC, advancing understanding of jet quenching effects.

Findings

Observation of large di-jet asymmetries indicating jet quenching

Measurement of single jet production rates in Pb+Pb collisions

Analysis of jet fragmentation patterns in the quark-gluon plasma

Abstract

Jet quenching in the hot and dense medium created in ultra-relativistic heavy ion collisions is a well-established experimental phenomenon at RHIC. It has long been anticipated that the LHC heavy ion program would substantially advance the study of jet quenching by providing access to highly energetic jets and by measuring fully-reconstructed jets. Immediately following turn-on of the LHC with lead beams, in November 2010, that expectation was fulfilled through the observation of large di-jet asymmetries that may indicate substantial jet quenching. We will present recent results from ATLAS aimed to provide further understanding of this phenomenon. Measurements of single jet production and jet fragmentation in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV will be presented.