Ultraviolet Properties of the Higgs Sector in the Lee-Wick Standard Model

Understand

The Lee-Wick (LW) Standard Model (SM) offers a new solution to the hierarchy problem.

• We discuss, using effective potential techniques, its peculiar ultraviolet (UV) behaviour.
• We show how quadratic divergences in the Higgs mass Mh cancel as a result of the unusual dependence of LW fields on the Higgs background (in a manner reminiscent of Little Higgses).
• We then extract from the effective potential the renormalization group evolution of the Higgs quartic coupling lambda above the LW scale.