Constraining the scalar singlet and inert dark matter models using neutron stars

Abstract

In the present work we study the scalar singlet as well as the Two-Higgs Doublet model inert dark matter particles impact on compact objects, and we provide the first constraints of the parameter space using neutron stars. The models discussed here are characterized by two free parameters, namely the mass $M_{\chi }$ of the scalar particle that plays the role of the dark matter in the Universe, and a dimensionless coupling constant ${\lambda }_{\chi }$ that determines the strength of the interaction of the dark matter particles with the Standard Model Higgs boson. By considering a typical neutron star we were able to obtain constraints on scalar dark matter depending on the DM annihilation cross section and self-interaction coupling constant. Our findings show that i) for heavy DM particles neutron stars can provide us with bounds better that the current limits from direct detection searches only when the self-annihilations of DM particles are negligible and the DM self-interaction coupling constant is very small, while ii) for light DM particles the bounds obtained here are comparable to limits from Higgs invisible decays unless the DM particles are extremely light.

Two-column revtex, 7 pages, 6 figures, to appear in PRD

References in corpus (12)

• Gauge Singlet Scalars as Cold Dark Matter
• Constraints on the Self-Interaction Cross-Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657-5
• Constraining Asymmetric Dark Matter through observations of compact stars
• WIMP dark matter, Higgs exchange and DAMA
• Dark Matter Candidates: A Ten-Point Test
• A new viable region of the inert doublet model
• Total Width of 125 GeV Higgs Boson
• Sterile neutrino production in models with low reheating temperatures
• Neutralino and gravitino dark matter with low reheating temperature
• A particle dark matter footprint on the first generation of stars
• New Limits on Thermally annihilating Dark Matter from Neutrino Telescopes
• The Sun as a probe of Fundamental Physics and Cosmology

Cited by in corpus (1)

• Constraints on light dark matter particles using white dwarf stars