2012/01/20 by Zuhair U. Khandker, Daliang Li, Witold Skiba · 1 citation
Mathematics · Physics and Astronomy · #Combinatorics #Cosmology and Gravitation Theories #Decoupling (probability) #Dimensionless quantity #Electroweak interaction #Higgs boson #Loop (graph theory) #Mathematical physics #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Renormalization #Renormalization group #Symmetry (geometry) #hep-ph
paper · pdf · doi:10.1103/physrevd.86.015006
18 pages
arxiv created 2012/01/20 · openalex publication_date 2012/07/03 · arxiv updated 2013/05/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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\ifmmode×\else\texttimes\fiU(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.