Low-energy implications of cosmological data in U(1)(X) Higgs inflation

Thumbnail Image
Journal Title
Journal ISSN
Volume Title
American Physical Society

A scalar field having the Coleman-Weinberg type effective potential arises in various contexts of particle physics and serves as a useful framework for discussing cosmic inflation. According to recent studies based on the Markov chain Monte Carlo analysis, the coefficients of such an effective potential are severely constrained by the cosmological data. We investigate the impact of this observation on the physics beyond the Standard Model, focusing on an inflationary model based on the (U\left(1{\right)}_{X})-extended Standard Model as a well-motivated example. We examine the parameter region that is not excluded by the Large Hadron Collider (LHC) run-2 at (139\text{}\text{}{\mathrm{fb}}^{-1}) integrated luminosity, and show that the model parameters can be further constrained by the high-luminosity LHC experiments in the near future. We also comment on the possible reheating mechanism and the dark matter candidates of this scenario.

UNIVERSE, BARYOGENESIS, MASS, Astronomy & Astrophysics, Physics, Particles & Fields, Physics
Kawai, S., Okada, N., & Okada, S. (2021). Low-energy implications of cosmological data in U(1)X Higgs inflation. In Physical Review D (Vol. 103, Issue 3). American Physical Society (APS). https://doi.org/10.1103/physrevd.103.035026