TTP12-036 Vacuum stability in the SM and the three-loop $\beta$-function for the Higgs self-interaction

TTP12-036 Vacuum stability in the SM and the three-loop $\beta$-function for the Higgs self-interaction

TTP12-036 Vacuum stability in the SM and the three-loop $\beta$-function for the Higgs self-interaction

In this article the stability of the Standard Model (SM) vacuum in the presence of radiative corrections and for a Higgs boson with a mass in the vicinity of $125$ GeV is discussed. The central piece in this discussion will be the Higgs self-interaction $\lambda$ and its evolution with the energy scale of a given physical process. This is described by the $\beta$-function to which we recently computed analytically the dominant three-loop contributions. These are mainly the QCD and top-Yukawa corrections as well as the contributions from the Higgs self-interaction itself. We will see that for a Higgs boson with a mass of about $125$ GeV the question whether the SM vacuum is stable and therefore whether the SM could be valid up to Planck scale cannot be answered with certainty due to large experimental uncertainties, mainly in the top quark mass.

M. F. Zoller
Subnucl.Ser. 50 557-566 2014
PDF PostScript arXiv
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