Two-loop stability of a complex singlet extended Standard Model

@article{Costa2015TwoloopSO,
  title={Two-loop stability of a complex singlet extended Standard Model},
  author={Ra{\'u}l Costa and Ant{\'o}nio Pedro Delgado Morais and Marco O. P. Sampaio and Rui Santos},
  journal={Physical Review D},
  year={2015},
  volume={92},
  pages={025024}
}
  • Raúl Costa, António Pedro Delgado Morais, +1 author Rui Santos
  • Published 2015
  • Physics
  • Physical Review D
  • Motivated by the dark matter and the baryon asymmetry problems, we analyze a complex singlet extension of the Standard Model with a ${\mathbb{Z}}_{2}$ symmetry (which provides a dark matter candidate). After a detailed two-loop calculation of the renormalization group equations for the new scalar sector, we study the radiative stability of the model up to a high energy scale (with the constraint that the 126 GeV Higgs boson found at the LHC is in the spectrum) and find it requires the existence… CONTINUE READING

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