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arXiv · 1212.0560

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

Ran Huo·Gabriel Lee·Arun M. Thalapillil·Carlos E. M. Wagner
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Abstract

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 $\tanβ$, the latter effect may be dominant. This leads to interesting regions of parameter space in which the model can accommodate a 125 GeV Higgs with relatively light third generation squarks and an increased $h \rightarrow γγ$ decay branching ratio, while still satisfying the constraints from electroweak precision data and Higgs vacuum stability.

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Ran Huo, Gabriel Lee, Arun M. Thalapillil, Carlos E. M. Wagner. 2013-01-15. $SU(2)\otimes SU(2)$ Gauge Extensions of the MSSM Revisited. https://doi.org/10.1103/physrevd.87.055011

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