The Role of Sterile Neutrinos in Cosmology and Astrophysics

By Alexey Boyarsky, Oleg Ruchayskiy, M. Shaposhnikov. 2008

615 citations recorded by the source corpus.

We present a comprehensive overview of an extension of the Standard Model that contains three right-handed (sterile) neutrinos with masses below the electroweak scale [the Neutrino Minimal Standard Model (νMSM)]. We consider the history of the Universe from the inflationary era through today and demonstrate that most of the observed phenomena beyond the Standard Model can be explained within the framework of this model. We review the mechanism of baryon asymmetry of the Universe in the νMSM and discuss a dark matter candidate that can be warm or cold and that satisfies all existing constraints. From the viewpoint of particle physics, the model provides an explanation for neutrino flavor oscillations. Verification of the νMSM is possible with existing experimental techniques.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f23ea907d01b2a35b781c3ee2612be9204dfea8d

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In Nuclear and High Energy Physics

Citations in the corpus

The local dark matter density (2014, background): “While no smoking gun, this and the other results above point towards dark matter being comprised of some new yet-to-be discovered weakly interacting particle that lies beyond the standard model of particle physics (e.g. Jungman et al., 1996; Boyarsky et al., 2009).”
A White Paper on keV sterile neutrino Dark Matter (2016, methodology): “[320] T. Asaka, M. Laine and M. Shaposhnikov, Lightest sterile neutrino abundance within the nuMSM, JHEP 0701 (2007) 091, [hep-ph/0612182].”
Warm dark matter in low scale left-right theory (2012, background): “Again, the X-ray constraints implies such mixing to be tiny [62, 63]”
Search for Heavy Right Handed Neutrinos at the FCC-ee (2014, background): “These models are of considerable interest, since the three families of right-handed neutrinos allow generation of the Baryon asymmetry of the Universe (BAU) [19, 20], and, for a suitable parameter space for the lightest of the heavy right-handed neutrinos, could even produce a suitable dark matter c”
A facility to search for hidden particles at the CERN SPS: the SHiP physics case (2015, background): “The first implies that very small mixing angles will not affect the BBN (typically U2 > 10−12 for M = 100 MeV).”
THE DENSITY PROFILES OF MASSIVE, RELAXED GALAXY CLUSTERS. II. SEPARATING LUMINOUS AND DARK MATTER IN CLUSTER CORES (2012, background): “These include warm sterile neutrinos at the ∼ keV scale (e.g., Abazajian et al. 2001; Boyarsky et al. 2009; Macciò et al. 2012; Menci et al. 2012), “fuzzy” CDM composed from an ultralight scalar particle (Hu et al. 2000; Woo & Chiueh 2009), dark matter produced from early decays (Kaplinghat 2005),…”
Gravitational probes of dark matter physics (2017, background): “However, for the specific choice of the neutrino minimal standard model (νMSM) [97], and for some non-resonant production models (requiring a primordial lepton asymmetry) [32, 34, 187], the free-streaming length is approximately kfs ∼ ( 0.5 Mpc−1 ) (mχ keV ) (41) This results in a range of Mhalo for”
Sterile neutrino Dark Matter (2018, background): “umber of new entities introduced but maximise the number of problems which can be addressed simultaneously. A specic low scale seesaw model that realises this idea was suggested in 2005 [36,37], see [146] for a review. This Neutrino Minimal Standard Model (MSM) provides a new systematic approach tha”
The haloes of bright satellite galaxies in a warm dark matter universe (2011, methodology): “However our WDM matter power spectrum is also an excellent fit for scales below k ∼ 10 hMpc−1, to the matter power spectrum of the M2L25 model of Boyarsky et al. (2009b), which is shown as a dashed line in Fig.”
Lyman-alpha constraints on warm and on warm-plus-cold dark matter models (2008, background): “In this case the dispersion relations for active and sterile neutrinos may cross each other.”
Higgs boson mass and new physics (2012, methodology): “We would like to use this opportunity to underline once more that the confirmed observational signals in favor of physics beyond the Standard Model which were not discussed in this paper (neutrino masses and oscillations, dark matter and baryon asymmetry of the Universe) can be associated with new p”
Neutrino Mass from Cosmology (2012, methodology): “r mass can be bounded from below using Lyman-forest data from quasar spectra, and from above using X-ray observations. The viability of this scenario is currently under careful examination (see e.g. [52]). 0.6 Eects of neutrino masses on cosmology In this section we will brie y describe the main cos”
Cosmological bounds on pseudo Nambu-Goldstone bosons (2011, background): “[42, 43] searching for sterile neutrino dark matter decays.”