Status of light inflaton: from inflation to laboratory
Niloy Mondal, Shashwat Sharma, Mathew Thomas Arun, Basabendu Barman
Abstract
We investigate the viability of the light inflaton scenario in light of the latest inflationary constraints from the Atacama Cosmology Telescope (ACT), together with bounds from collider and intensity-frontier experiments searching for a feebly coupled light scalar with a sub-GeV mass. Assuming a quartic inflaton potential, we identify the region of parameter space consistent with the ACT observations and derive constraints on the inflaton mass and inflaton-Higgs mixing using results from NA62, KOTO, BaBar, Belle, LHCb, MATHUSLA, FASER2, SHiP, and neutral meson oscillations. We also explore the prospects for dark matter production during reheating within this framework, while remaining consistent with the inflationary observables.
Create a lesson
Related papers
Cosmological stasis and the coupled dark sector of the Dark Dimension
Alexander Stewart
Fast Surrogate for the Earth Matter Effect on Solar Neutrinos
Saeed Ansarifard
A Unitary Fixed Point Away from Threshold: Momentum-Surface EFT for Strong Mixing
Lorenzo De Ros, Javier Reig Navarro
Limitations of quantum tomography in Higgs-boson decays to four leptons
Morgan Del Gratta, Fabio Maltoni, Davide Pagani et al.
Bin-to-bin correlations in the extraction of proton's transverse structure
Laurent Favart, Francesco Hautmann, Aleksandra Lelek et al.
Cosmic Birefringence and Axiogenesis
Raymond T. Co, Lawrence J. Hall, Keisuke Harigaya et al.