expectations. If, indeed, this is the case, the next obvious question is, given that so far we have not seen any evidence for new particles at the LHC, whether the [[Standard Model ]{}]{}can be the final theory all the way up to Planck scale. The answer is obviously no, since the [[Standard Model ]{}]{}predicts neutrinos to be massless and there is no viable [[Standard Model ]{}]{}candidate for dark matter.

For the moment we put these two issues aside and ask ourselves whether there are other compelling reasons to argue that the [[Standard Model ]{}]{}cannot be the final theory up to Planck scale. Indeed, there are several other theoretical and aesthetical arguments against it being the final theory such as the unification of forces and the hierarchy/fine-tunning/naturalness problem. However, the “Higgs discovery” has facilitated us to study the high energy behavior of the [[Standard Model ]{}]{}up to the Planck scale. In particular the study of electroweak phase transition, possibly linked to baryogenesis, and the stability of Higgs vacuum at energies far above the electroweak scale. Its the latter question that we address in this work.

The detailed analysis of Higgs vacuum within the [[Standard Model ]{}]{}has of course been carried out 