The Ĥ-parameter: an oblique Higgs view
The Ĥ-parameter: an oblique Higgs view
A bstract We study, from theoretical and phenomenological angles, the Higgs boson oblique parameter Ĥ , as the hallmark of off-shell Higgs physics. Ĥ is defined as the Wilson coefficient of the sole dimension-6 operator that modifies the Higgs boson propagator, within a Universal EFT. Theoretically, we describe self-consistency conditions …