Phenomenology of an Extended Higgs Portal Inflation Model after Planck 2013

TL;DR

This paper analyzes an extended Higgs portal inflation model with nonminimal coupling, showing it aligns with Planck 2013 data and discussing constraints from particle physics experiments like the LHC.

Contribution

It provides a detailed phenomenological analysis of an extended Higgs portal inflation model incorporating recent astrophysical and particle physics data.

Findings

The model's parameters are consistent with Planck 2013 data.

The nonminimal coupling and self-coupling relation is established.

Constraints from LHC Higgs data are discussed.

Abstract

We consider an extended inflation model in the frame of Higgs portal model, assuming a nonminimal coupling of the scalar field to the gravity. Using the new data from Planck $2013$ and other relevant astrophysical data, we obtain the relation between the nonminimal coupling $\xi$ and the self-coupling $\lambda$ needed to drive the inflation, and find that this inflationary model is favored by the astrophysical data. Furthermore, we discuss the constraints on the model parameters from the experiments of particle physics, especially the recent Higgs data at the LHC.