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    Collider Cross Talk

    Using jet substructure and grooming techniques for new physics in Run-II

    by Gavin Salam (CERN), Lily Asquith (Argonne National Laboratory (US))

    → Europe/Zurich
    4/2-011 - TH common room (CERN)

    4/2-011 - TH common room

    CERN

    15
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    Description
    New jet physics techniques can be broadly divided into (i) tagging: identification of signal jets (from the decay of a massive object such as a top quark or Higgs boson) in a large background of gluon and light quark jets, based on the distribution of energy within the jet; (ii) grooming: the removal of soft radiation which can result from pile-up or from the non-perturbative (non-measurable) physics process associated with light quark and gluon jets, but not jets resulting from the decay of a massive particle. In Run-II, with significant increases in both center-of-mass energy (8 TeV -> 13 TeV) and instantaneous luminosity, these techniques will become essential. This talk will include a theoretical introduction to the issues involved in tagging and grooming, followed by a discussion of experimental progress within ATLAS in developing and validating these tools.