We refine and update the metastability constraint on the standard model (SM) top and Higgs masses by analytically including gravitational corrections to the vacuum decay rate. Present best-fit ranges of the top and Higgs masses mostly lie in the narrow metastable region. Furthermore, we show that the SM potential can be fine-tuned in order to be made suitable for inflation. However, SM inflation results in a power spectrum of cosmological perturbations not consistent with observations.
|Autori:||Isidori G; Rychkov VS; Strumia A; Tetradis N|
|Titolo:||Gravitational corrections to standard model vacuum decay|
|Anno del prodotto:||2008|
|Digital Object Identifier (DOI):||10.1103/PhysRevD.77.025034|
|Appare nelle tipologie:||1.1 Articolo in rivista|