Hunting for heavy neutral leptons at future lepton colliders
Hunting for heavy neutral leptons at future lepton colliders
Neutrinos are the most elusive particles known. Heavier sterile neutrinos mixing with the Standard Model partners might solve the mystery of the baryon asymmetry of the universe and take part in the mass generation mechanism for the light neutrinos. Future lepton colliders, including $e^+e^-$ Higgs factories, as well as multi-TeV electron and muon machines, will provide the farthest search reach for such neutrinos in the mass range from above the Z pole into the multi-TeV regime. In our contribution, we will discuss the future lepton collider search potential for such particles in their prompt decays. We will also present a new approach to constrain the nature of heavy neutrinos, probing their Majorana or Dirac nature, based on the kinematic variable distributions. Finally, we will discuss the complementarity in the flavour-mixing parameter space between the two types of lepton colliders.
2023 European Physical Society Conference on High Energy Physics, EPS-HEP2023, Hamburg, Germany, 21 Aug 2023 - 25 Aug 2023; Proceedings of Science / International School for Advanced Studies (EPS-HEP2023), 460 (2024). doi:10.22323/1.449.0460
Published by SISSA, Trieste
data analysis method, mass generation, Higgs-factory, pole, electron positron: colliding beams, electron positron: annihilation, neutrino: sterile, 530, neutrino: heavy, kinematics, baryon: asymmetry, neutrino: Majorana, proposed experiment, info:eu-repo/classification/ddc/530, neutrino: mixing, neutrino: Dirac, numerical calculations: Monte Carlo
data analysis method, mass generation, Higgs-factory, pole, electron positron: colliding beams, electron positron: annihilation, neutrino: sterile, 530, neutrino: heavy, kinematics, baryon: asymmetry, neutrino: Majorana, proposed experiment, info:eu-repo/classification/ddc/530, neutrino: mixing, neutrino: Dirac, numerical calculations: Monte Carlo
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