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Seminars
Heavy neutral leptons - minimal and testable explanation for Beyond Standard Model phenomena
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Europe/Vienna
Description
Particle physics is at the crossroads. Despite the great success of the Standard Model at LHC and accelerators, we know that the SM does not explain three observed phenomena: neutrino oscillations, dark matter, and baryon asymmetry of the Universe. In this talk, I will describe a simple and economic extension of the SM which just assumes that neutrinos, like all other fermions in SM, exist both in left and right counterparts. If the masses of neutral (sterile) right-handed neutrinos are below W mass, they can be efficiently searched for at accelerators, with especially high sensitivity for forthcoming Intensity Frontier experiments for masses below B mesons. At the same time such HNLs could explain observed patterns of neutrino oscillations; cause violation of the thermal equilibrium in the Early Universe, resulting in matter-antimatter asymmetry. One of the three HNLs is an interesting and viable DM candidate. Parameters space of this minimal model is bounded from all sides, making it potentially testable. I will review how the combination of efforts in particle physics, cosmology, and astrophysics allows us to explore the parameter space of this well-motivated model.
https://cern.zoom.us/j/4312545672?pwd=VzZqK3A4NkprSG5CWTYyYWN2UWk0dz09
