Cosmological Constraints on Dark Scalar
arXiv:2112.11096 · doi:10.1007/JHEP03(2022)198
Abstract
We discuss cosmological constraints on a dark scalar particle mixing with the Standard Model Higgs boson. We pay particular attention to the dark scalar production process when the reheating temperature of the Universe is very low, which allows us to give a conservative limit on the low-mass scalar particle. We also study the effect of the self-interaction of the dark scalars and find this has a significant impact on the cosmological constraints. We obtain the most conservative cosmological constraint on the dark scalar, which is complementary to accelerator experiments and astrophysical observations.
42 pages, 19 figures
References in corpus (12)
- Secluded WIMP Dark Matter
- New Fixed-Target Experiments to Search for Dark Gauge Forces
- Relic neutrino decoupling with flavour oscillations revisited
- A precision calculation of relic neutrino decoupling
- General Constraints on Dark Matter Decay from the Cosmic Microwave Background
- Heavy Dark Matter Through the Higgs Portal
- Supernova Bounds on the Dark Photon Using its Electromagnetic Decay
- The Impact of New d(p,γ)He3 Rates on Big Bang Nucleosynthesis
- Precise WIMP Dark Matter Abundance and Standard Model Thermodynamics
- Revisiting supernova constraints on a light CP-even scalar
- Constraint on the Effective Number of Neutrino Species from the WMAP and SDSS LRG Power Spectra
- Cosmological beam dump: constraints on dark scalars mixed with the Higgs boson