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arXiv · 1201.4383

Electroweak Corrections from Triplet Scalars

Zuhair U. Khandker·Daliang Li·Witold Skiba
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Abstract

We compute the electroweak S and T parameters induced by SU(2)_L triplet scalars up to one-loop order. We consider the most general renormalizable potential for a triplet and the Standard Model Higgs doublet. Our calculation is performed by integrating out the triplet at the one-loop level and also includes the one-loop renormalization group running. Effective field theory framework allows us to work in the phase with unbroken SU(2)_L x U(1)_Y symmetry. Both S and T parameters exhibit decoupling when all dimensionful parameters are large while keeping dimensionless ratios fixed. We use bounds on S and T to constrain the triplet mass and couplings.

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Zuhair U. Khandker, Daliang Li, Witold Skiba. 2012-01-20. Electroweak Corrections from Triplet Scalars. https://doi.org/10.1103/physrevd.86.015006

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