Emanuelle Pinsard (U Zürich), "Hunting for heavy neutral leptons across the energy scales"
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Europe/Amsterdam
Veltman Center
Veltman Center
Description
The observation of neutrino oscillations provides the first laboratory evidence for physics beyond the Standard Model. In this talk, after motivating the need for New Physics and highlighting the central role of lepton flavour observables, we focus on extensions of the Standard Model involving heavy neutral leptons (HNL) and discuss how they can be probed across different energy scales.
We begin by examining the impact of the additional leptonic CP-violating phases that arise in these scenarios. We then turn to lepton flavour violating scattering processes at future muon colliders such as muTRISTAN. We subsequently discuss the (often underestimated) role of lepton flavour universality violation observables and electroweak precision observables in constraining HNL extensions. Finally, we explore how di-Higgs production at future lepton colliders could provide further sensitivity to the presence of heavy sterile neutrinos.
