Theory seminar (11am): Emanuele Gendy: An unconventional approach to the Hierarchy Problem
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Europe/Amsterdam
Colloquium Room
Colloquium Room
Description
The electroweak hierarchy problem and the naturalness framework in general have been a great driving force for model building. In the case of the Higgs boson, the problem lies in the difficulty of producing a model where the Higgs mass is insensitive to parameters in the UV.
With time, more traditional solutions to the hierachy problem like SUSY or Extra dimensions have given room to more daring approaches.
As a proof of concept, we describe a model where the one-loop corrections to the mass of a scalar field cancel exactly, thus rendering it UV-insensitive. This is achieved by introducing a symmetry that generalizes SU(N) to add fermionic generators. The price to pay, however, is the introduction of degrees of freedom with the wrong statistics, with heavy implications for unitarity.
