# Quark Matter 2012

12-18 August 2012
US/Eastern timezone

## Three-Particle Azimuthal Correlations with an Intermediate-$p_T$ Trigger in Pb-Pb at $\sqrt{s_{NN}}=2.76$ TeV in ALICE

16 Aug 2012, 16:00
2h

Poster Correlations and fluctuations

### Speaker

Jason Glyndwr Ulery (Johann-Wolfgang-Goethe Univ. (DE))

### Description

Tri-hadron azimuthal correlations are studied in Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV in ALICE. They are analyzed with one intermediate $p_T$ trigger to preferentially select on jets and two lower $p_T$ associated particles. With these correlations interaction of the jets and the medium can be studied. Three-particle correlations can give insight into the sources of modification to the jet shape such as jet deflection by radial flow, $k_T$ broadening, path length dependent energy loss, or conical emission from either \v{C}erenkov gluon radiation or a Mach Cone. In addition, different background subtraction systematics allow us to study three-particle correlations in the $p_T$ region where the flow systematics are very large in two-particle correlations. The dependence of the results on collision centrality and on trigger and associated particle $p_T$ will be presented.

### Primary author

Collaboration ALICE (CERN, Geneva, Switzerland)

### Co-authors

Jason Glyndwr Ulery (Johann-Wolfgang-Goethe Univ. (DE)) Dr Jason Glyndwr Ulery (Johann-Wolfgang-Goethe Univ. (DE))

 Slides