Speaker
Rudiger Haake
(Westfaelische Wilhelms-Universitaet Muenster (DE))
Description
10th International Workshop on High-pT Physics at RHIC/LHC, abstract draft for a talk, Rüdiger Haake (Westfälische Wilhelms-Universität Münster, Germany) on behalf of the ALICE collaboration.
Title: Measurement of inclusive jet spectra in pp, p-Pb, and Pb-Pb collisions with the ALICE detector
Highly energetic jets are sensitive probes for the kinematic properties and the topology of high energy hadron collisions. Jets are collimated sprays of charged and neutral particles which are produced in fragmentation of hard scattered partons in an early stage of the collision.
In ALICE, jets have been measured in pp, p-Pb, and Pb-Pb collisions at several collision energies. While analyses of Pb-Pb events unveil properties of the hot and dense medium formed in heavy ion collisions, pp and p-Pb collisions can shed light on hadronization and cold nuclear matter effects in jet production. Additionally, pp and p-Pb serve as a baseline for disentangling hot and cold nuclear matter effects. p-Pb analyses can also serve as an important constraint for the nuclear parton density functions providing information about the nuclear environment.
The exact evaluation of the background from the underlying event is an especially important ingredient. Due to the different nature of underlying events, each collision system requires a different analysis technique for removing the effect of the background on the jet sample.
The focus of this talk is on the ALICE measurements of jet spectra and nuclear modification factors connecting p-Pb and Pb-Pb events to pp collisions. Furthermore, the radial jet structure is presented by comparing jet spectra reconstructed with different resolution parameters.
Author
Rudiger Haake
(Westfaelische Wilhelms-Universitaet Muenster (DE))
