Opening a new window for warm dark matter

2006/02/28 by T. Asaka, Takehiko Asaka, Mikhail Shaposhnikov +1 · 12 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph #hep-ph

paper · pdf · doi:10.1016/j.physletb.2006.05.067

published as Phys.Lett.B638:401-406,2006 · 7 pages, version to appear in Phys. Lett. B. A discussion of new constraints on properties of sterile neutrino, coming from X-ray observations and from Lyman-alpha forest data is added

arxiv created 2006/05/12 · openalex publication_date 2006/06/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We explore the range of parameters for dark-matter sterile neutrinos in an extention of the Minimal Standard Model by three singlet fermions with masses below the electroweak scale (the νMSM). This simple model can explain a wide range of phenomena, including neutrino oscillations, baryogenesis, the pulsar velocities, and the early reionization. The presence of two heavier sterile neutrinos and the possibility of entropy production in their decays broadens the allowed range of parameters for the dark-matter sterile neutrinos (or other types of dark matter, for example, the gravitino). In addition, the primordial production of dark matter sterile neutrinos allows to escape most of the constraints.

Citations

• Sterile neutrinos as dark matter
• Partial-symmetries of weak interactions

Cited by

• Search for the light dark matter with an X-ray spectrometer
• Telescope search for decaying relic axions
• Standard Model Higgs boson mass from inflation
• Physics at a future Neutrino Factory and super-beam facility
• Delayed pulsar kicks from the emission of sterile neutrinos
• The dark matter transfer function: free streaming, particle statistics and memory of gravitational clustering
• Dark matter candidates
• Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
• Sterile Neutrinos, Dark Matter, and Pulsar Velocities in Models with a Higgs Singlet
• Neutrino electromagnetic interactions: A window to new physics
• Light sterile neutrinos: Status and perspectives
• Sterile Neutrinos as the Origin of Dark and Baryonic Matter