Gauge singlet scalars as cold dark matter.

  title={Gauge singlet scalars as cold dark matter.},
  journal={Physical review. D, Particles and fields},
  volume={50 6},
  • Mcdonald
  • Published 15 September 1994
  • Physics
  • Physical review. D, Particles and fields
We consider a very simple extension of the standard model in which one or more gauge singlet scalars S-i couples to the standard model via an interaction of the form lambda(S)S(i)(dagger)S(i)H(dagger)H, where H is the standard model Higgs doublet. The thermal relic density of S scalars is calculated as a function of the coupling lambda(S) and the S scalar mass ms. The regions of the (m(S),lambda(S)) parameter space which can be probed by present and future experiments designed to detect… 
Real gauge singlet scalar extension of the Standard Model: A possible candidate for cold dark matter
The simplest extension of Standard Model (SM) is considered in which a real SM gauge singlet scalar with an additional discrete symmetry Z2 is introduced to SM. This additional scalar can be a viable
Gauge singlet scalar as inflaton and thermal relic dark matter
We show that, by adding a gauge singlet scalar S to the standard model which is nonminimally coupled to gravity, S can act both as the inflaton and as thermal relic dark matter. We obtain the allowed
Scalar dark matter in the B−L model
The U(1)B−L extension of the Standard Model requires the existence of right-handed neutrinos and naturally realizes the seesaw mechanism of neutrino mass generation. We study the possibility of
Constraints on scalar dark matter from direct experimental searches
The standard model (SM) plus a real gauge-singlet scalar field dubbed darkon (SM+D) is the simplest model possessing a weakly interacting massive particle (WIMP) dark-matter candidate. The upper
Vacuum stability, neutrinos, and dark matter
A bstractMotivated by the discovery hint of the Standard Model (SM) Higgs mass around 125 GeV at the LHC, we study the vacuum stability and perturbativity bounds on Higgs scalar of the SM extensions
WIMP and SIMP dark matter from the spontaneous breaking of a global group
We propose and study a scalar extension of the Standard Model which respects a ℤ{sub 3} symmetry remnant of the spontaneous breaking of a global U(1){sub DM} symmetry. Consequently, this model has a
Minimal models for g−2 and dark matter confront asymptotic safety
We use the framework of asymptotic safety above the Planck scale to constrain the parameter space of simple models of new physics that can accommodate the measured value of the anomalous magnetic
A new parameter space study of the fermionic cold dark matter model
We consider the standard model (SM) extended by a gauge singlet fermion as cold dark matter (SFCDM) and a gauge singlet scalar (singlet Higgs) as a mediator. The parameter space of the SM is enlarged
S-inflation:a testable, minimal model of inflation and dark matter
This thesis describes work on inflationary cosmology, specifically in relation to observations. After reviewing the theory of inflation and dark matter, we introduce a model, ‘S-inflation’, in which


Proceedings of the International School of Astroparticle Physics, Houston Advanced Research Center (HARC), USA, 6-12 January 1991
Introduction to the theory of particle physics, J. Ellis three lectures on cosmology, E. Kob measurements of the primordial abundance of helium, G.A. Shields recent advances in Big Bang
The early Universe
In the past few years one of the most exciting areas of research in physics has been the interdisciplinary field of cosmology and particle physics. The NSF's Institute for Theoretical Physics in
Proceedings of the Workshop on High Energy Neutrino Astrophysics, Honolulu, Hawaii, 23-26 March 1992
The proceedings of this workshop consider the prospects for opening up a new window on the universe with the generation of High Energy Neutrino telescopes now under construction or being planned.
  • Astrophys.J
  • 1987
  • Phys.Rev
  • 1991
  • Phys
  • 1988
  • Astrophys.J
  • 1985
  • Astrophys.J
  • 1991