A White Paper on keV sterile neutrino Dark Matter
نویسندگان
چکیده
منابع مشابه
Leptongenesis in models with keV sterile neutrino dark matter
The modern cosmology provides at least two experimental evidences for the existence of new physics beyond the Standard Model (SM). One of them is the baryon asymmetry of the Universe (BAU). The other one is the Dark Matter (DM) which constitutes most of the gravitating mass in the Universe. To be consistent with the observations, the DM candidate should be a very weakly interacting particle. Fo...
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An extension of the Standard Model by three right-handed neutrinos with masses smaller than the electroweak scale (the νMSM) can explain simultaneously dark matter and baryon asymmetry of the Universe, being consistent with the data on neutrino oscillations. A dark matter candidate in this theory is the sterile neutrino with the mass in keV range. We discuss the constraints on the properties of...
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Previous fits of sterile neutrino dark matter (DM) models to cosmological data ruled out masses smaller than approximately 8 keV, assuming a production mechanism that is not the best motivated from a particle physics point of view. Here we focus on a realistic extension of the standard model with three sterile neutrinos, consistent with neutrino oscillation data and baryogenesis, with the light...
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The recent observation of an X-ray line at an energy of 3.5 keV mainly from galaxy clusters has initiated a discussion about whether we may have seen a possible dark matter signal. If confirmed, this signal could stem from a decaying sterile neutrino of a mass of 7.1 keV. Such a particle could make up all the dark matter, but it is not clear how it was produced in the early Universe. In this le...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2017
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2017/01/025