slides - Institute for Particle Physics Phenomenology

Higgs as a pseudo-Goldstone Boson
based on our QCD analogy, we have a recipe for a Goldstone
Higgs scenario:
step 1:
• assume some strong dynamics at a high scale f.
EWS should remain unbroken: G → H ⊃ SU(2)w ⊗ U(1)Y
• that dynamics generates a bunch of Goldstone bosons,
including the Higgs (4-plet of particles), as a doublet.
• interactions exterior to strong dynamics lead to V(h).
Choose interactions such that V(h)min is at h ≠ 0.
Instead hmin = v
step 2:
• Higgs is a composite particle → no hierarchy problem
• v < f means EWSB happens at a scale lower than the
strong dynamics
Wednesday, January 9, 2013