Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 37: Hadronenstruktur und -spektroskopie

HK 37.5: Vortrag

Donnerstag, 20. März 2014, 15:00–15:15, HZ 1+2

Measurement of Identified Jet Fragmentation Functions in Proton-Proton Collisions with ALICE at the LHC — •Benjamin A. Heß for the ALICE collaboration — Physikalisches Institut, Universität Tübingen, Germany

The ALICE experiment has excellent tracking and particle identification capabilities for tracks with transverse momenta ranging from 150 MeV/c up to several 10 GeV/c. This renders the measurement of identified jet fragmentation functions possible.

Partons from hard interactions at large momentum transfers fragment into jets. The non-perturbative aspect of the fragmentation process is encoded in so-called fragmentation functions that need to be determined from experiment. Comparing the measured functions with theoretical models can help to better understand the fragmentation process.

The anti-kT algorithm is used to reconstruct charged jets. Charged particles in these jets are then identified via their specific energy loss dE/dx in the ALICE TPC. First results for identified fragmentation functions in proton-proton collisions at √s = 7 TeV will be presented and compared to MC models.