SU(5) - Institute of Particle and Nuclear Physics

Potential for the HiggsesW = m 2 H H † H + λ H (H † H) 2 + m 2 Φ trΦ 2 + g Φ trΦ 3 + λ Φ trΦ 4 + ˜λ Φ (trΦ 2 ) 2+ g HΦ H † ΦH + λ HΦ H † Φ 2 H + ˜λ HΦ H † H trΦ 2Problem: Doublet-Triplet-Splitting⎛ ⎞H 1H 2⇒ heavy coloured Higgs triplet5:⎜H 3⎟⎝H 4⎠⇒ light SM Higgs doubletH 5