Steven Randolph Schramm (Universite de Geneve (CH))
Hadronic decays of heavy particles with momenta much larger than their mass result in their decay products being reconstructable as a single largeradius jet. The study of the substructure of these jets allows the separation of these boosted decays with respect to more common jets from lightquarks and gluons. Several techniques have been developed by the phenomenology and experimental community to identify jets coming from hadronic decays of boosted top quarks, W, Z and Higgs bosons. The performance of several such techniques have been studied in ATLAS using fullysimulated Monte Carlo events, and validated on data using pure samples of top quarks, W bosons from top decays and dijet events. Results of these studies will be presented for Run 1 as well as Run 2 of the LHC.
ATLAS Collaboration (CERN)