Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 16: Schwerionenkollisionen und QCD Phasen

HK 16.7: Talk

Monday, March 4, 2013, 18:30–18:45, HSZ-201

Triggering on Jets with the ALICE TRD — •Jochen Klein — Physikalisches Institut, University of Heidelberg

The fragmentation of partons originating from hard interactions results in jets. In pp collisions jet evolution is well described by vacuum parton showers. In PbPb collisions modifications arise from the dense and strongly interacting medium. The comparison of data from PbPb, pPb, and pp data allows conclusions on medium properties.

Jets with high transverse momenta can be better separated from the high background in PbPb collisions. To collect events with such jets in pp and pPb a trigger is required. The ALICE TRD at the LHC (CERN) can provide fast hardware-based triggers about 7 µ s after an interaction. We will report on the performance of the TRD jet trigger in the pp run 2012 and show prospects for the future.