Despite all its success, the Standard Model of particle physics cannot explain some of the phenomena seen in Nature. Long-standing open questions, including the hierarchy problem, dark matter and electroweak baryogenesis motivate searches for new (heavy) particles. With the large amount of data collected during Run-2 of the Large Hadron Collider, searches for new particles predominantly decaying into pairs of bosons provide high sensitivity to physics beyond the Standard Model. The discovered Higgs boson is an example of a massive particle with significant branching fractions for decays into pairs of bosons. Its properties, are measured with increasing precision. Thus, the Higgs boson has become an ideal tool to conduct new-physics searches. In this presentation, I am highlighting recent searches by the ATLAS Collaboration for diboson resonances and anomalies in the Higgs boson couplings.
Hybrid access via ZOOM:
Meeting ID: 856 802 8697
Peter Thirolf (LMU) / Norbert Kaiser (TUM)