Speaker
Description
The electroweak hierarchy problem and the naturalness framework have been a
driving theme for model building beyond the Standard Model of particle physics.
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
ultraviolet (UV) completed theory. With time, more traditional solutions to
the hierarchy problem, like supersymmetry or extra dimensions have given room
to more daring approaches. We describe a model where
the one-loop corrections to the mass of a scalar field cancel exactly, making its UV-insensitivity less severe. This is achieved by introducing a symmetry that generalizes SU(N) by adding fermionic generators. The price to pay, however, is the introduction of degrees of freedom with the wrong spin-statistics, with severe implications for unitarity.
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