Higgs Inflation: constraining the top quark mass and breaking the $H_0$-${\sigma }_8$ correlation

Abstract

Extending previous results [JHEP 11 (2021) 091], we explore aspects of the reheating mechanism for non-minimal Higgs inflation in the strong coupling regime. We constrain the radiative corrections for the inflaton's potential by considering the Coleman-Weinberg approximation and use the Renormalization Group Equations for the Higgs field to derive an upper limit on the quark top mass, $m_t$. Using the current Cosmic Microwave Background, Baryon Acoustic Oscillation, and Supernova data, we obtain $m_t\le 170.44$ GeV, confirming the observational compatibility of the model with recent $m_t$ estimates reported by the CMS collaboration. We also analyze the breakdown of the well-known correlation involving the Hubble constant $H_0$ and the clustering parameter ${\sigma }_8$, which makes the model interesting in light of the cosmological tensions discussed over the last decade.

13 pages, 3 figures, 1 table

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Cited by in corpus (3)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• A visual tool for assessing tension-resolving models in the $H_0$-${\sigma }_8$ plane
• Constraints on polynomial inflation under power-law perturbations