$SU(2)\otimes SU(2)$ Gauge Extensions of the MSSM Revisited

Understand

We study an extension of the Minimal Supersymmetric Standard Model with a gauge group $SU(2)_1\otimes SU(2)_2$ breaking to $SU(2)_L$.

• The extra wino has an enhanced gauge coupling to the SM-like Higgs boson and, if light, has a relevant impact on the weak scale phenomenology.
• The low energy Higgs quartic coupling is modified both by extra $D$-term corrections and by a modification of its renormalization group evolution from high energies.
• At low values of $\tan\beta$, the latter effect may be dominant.