Abstract

The Standard Model predicts several rare Higgs boson decays, which have not yet been observed, but that could be enhanced in theories beyond the Standard Model. Among these are decays to light leptons, e.g. [Formula: see text]. In addition, theories beyond the Standard Model may predict lepton-flavor violating decays of the Higgs boson. Results for these searches based on LHC [Formula: see text] collision data recorded at 13 TeV by the ATLAS experiment will be presented.

Highlights

  • In July 2012, the ATLAS and CMS Collaborations [1, 2], announced the discovery of a new particle with a mass of approximately 125 GeV [3, 4] at the CERN Large HadronCollider (LHC)

  • Subsequent measurements of its properties have indicated that this particle is consistent with the Standard Model (SM) Higgs boson [5, 6, 7, 8]

  • While the interaction between the Higgs boson and the charged fermions of the third generation has already been observed by the ATLAS and CMS Collaborations, only upper limits exist on the interactions with fermions of the first two generations and lepton-flavor violating (LFV) decays

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Summary

Introduction

In July 2012, the ATLAS and CMS Collaborations [1, 2], announced the discovery of a new particle with a mass of approximately 125 GeV [3, 4] at the CERN Large HadronCollider (LHC). While the interaction between the Higgs boson and the charged fermions of the third generation has already been observed by the ATLAS and CMS Collaborations, only upper limits exist on the interactions with fermions of the first two generations and lepton-flavor violating (LFV) decays.

Results
Conclusion
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