Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 35: Top-Quarks 3

T 35.9: Vortrag

Montag, 4. März 2013, 18:45–19:00, HSZ-02

Reconstruction of hadronic top quark decays in boosted event topologies at ATLAS — •Christoph Wasicki — DESY, Zeuthen, Germany

Several models beyond the Standard Model postulate heavy particles decaying predominantly into top pairs. For particle masses above 1 TeV top pairs become highly boosted and its jets in purely hadronic top decays merge and cannot be resolved experimentally.

New methods to identify and reconstruct boosted top pair events with the ATLAS detector are presented which make use of substructure observables such as jet shapes and masses to identify the individual hadronic decay products.