The singlet scalar as FIMP dark matter
From MaRDI portal
Publication:469250
DOI10.1007/JHEP08(2011)060zbMATH Open1298.81498arXiv1105.1654MaRDI QIDQ469250
Author name not available (Why is that?)
Publication date: 10 November 2014
Published in: (Search for Journal in Brave)
Abstract: The singlet scalar model is a minimal extension of the Standard Model that can explain the dark matter. We point out that in this model the dark matter constraint can be satisfied not only in the already considered WIMP regime but also, for much smaller couplings, in the Feebly Interacting Massive Particle (FIMP) regime. In it, dark matter particles are slowly produced in the early Universe but are never abundant enough to reach thermal equilibrium or annihilate among themselves. This alternative framework is as simple and predictive as the WIMP scenario but it gives rise to a completely different dark matter phenomenology. After reviewing the calculation of the dark matter relic density in the FIMP regime, we study in detail the evolution of the dark matter abundance in the early Universe and the predicted relic density as a function of the parameters of the model. A new dark matter compatible region of the singlet model is identified, featuring couplings of order 10^-11 to 10^-12 for singlet masses in the GeV to TeV range. As a consequence, no signals at direct or indirect detection experiments are expected. The relevance of this new viable region for the correct interpretation of recent experimental bounds is emphasized.
Full work available at URL: https://arxiv.org/abs/1105.1654
No records found.
No records found.
This page was built for publication: The singlet scalar as FIMP dark matter
Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q469250)
