Thursday, October 1, 2020, 16:00
OSGA/EG06
Stefan Antusch, Basel University
Abstract:
Heavy neutral leptons are among the most attractive extensions of the
Standard Model of elementary particles to generate the light neutrino
masses observed in neutrino oscillation experiments. When the heavy
neutral leptons (= sterile, right-chiral neutrinos) are subject to a
protective lepton number-like symmetry, they can have masses around the
electroweak scale and not too small Yukawa couplings, making them
potentially testable at the LHC and at future colliders. We discuss the
discovery prospects for heavy neutral leptons at future
electron-positron, proton-proton and electron-proton colliders, and
present estimates for the possible sensitivities for the active-sterile
neutrino mixing angles and the heavy neural lepton masses. We highlight
several novel search channels, and compare the performance of the
different collider types.