Sterile Neutrinos as the Origin of Dark and Baryonic Matter

Canetti, Laurent; Drewes, Marco; Shaposhnikov, Mikhail

doi:10.1103/physrevlett.110.061801

Cited by 216 publications

(295 citation statements)

References 117 publications

(106 reference statements)

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“…Its interaction with active neutrinos could source neutrino flavour oscillations. In order simultaneously to account for the dark matter and flavour oscillations, at least three E-mail: sownak.bose@durham.ac.uk right-handed sterile neutrinos are needed (Asaka & Shaposhnikov 2005;Asaka et al 2007;Canetti et al 2013). In this 'Neutrino Minimal Standard Model' (or νMSM), two of the sterile neutrinos interact more strongly with the active neutrinos than the third, which behaves as dark matter (Boyarsky et al 2009b).…”

Section: Introductionmentioning

confidence: 99%

Reionization in sterile neutrino cosmologies

Bose¹,

Frenk²,

Hou³

et al. 2016

Mon. Not. R. Astron. Soc.

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. ABSTRACTWe investigate the process of reionisation in a model in which the dark matter is a warm elementary particle such as a sterile neutrino. We focus on models that are consistent with the dark matter decay interpretation of the recently detected line at 3.5 keV in the X-ray spectra of galaxies and clusters. In warm dark matter models the primordial spectrum of density perturbations has a cut-off on the scale of dwarf galaxies. Structure formation therefore begins later than in the standard cold dark matter (CDM) model and very few objects form below the cut-off mass scale. To calculate the number of ionising photons, we use the Durham semianalytic model of galaxy formation, GALFORM. We find that even the most extreme 7 keV sterile neutrino we consider is able to reionise the Universe early enough to be compatible with the bounds on the epoch of reionisation from Planck. This, perhaps surprising, result arises from the rapid build-up of high redshift galaxies in the sterile neutrino models which is also reflected in a faster evolution of their far-UV luminosity function between 10 > z > 7 than in CDM. The dominant sources of ionising photons are systematically more massive in the sterile neutrino models than in CDM. As a consistency check on the models, we calculate the present-day luminosity function of satellites of Milky Way-like galaxies. When the satellites recently discovered in the DES survey are taken into account, strong constraints are placed on viable sterile neutrino models.

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Section: Introductionmentioning

confidence: 99%

Reionization in sterile neutrino cosmologies

Bose¹,

Frenk²,

Hou³

et al. 2016

Mon. Not. R. Astron. Soc.

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“…The two free parameters of mass, m s , and mixing angle with the active neutrinos, sin 2 (2θ), are unconstrained from particle physics, but as seen in Fig. 7 various observations have already excluded large parts of this parameter space (Laine & Shaposhnikov 2008;Canetti et al 2013b;Boyarsky et al 2008a;Riemer-Sørensen & Hansen 2009;Boyarsky et al 2006a;Horiuchi et al 2014). …”

Section: Annihilation-like Dark Mattermentioning

confidence: 99%

“…The sterile neutrino is a strong particle candidate for the dark matter, viable with or without super symmetry or universal extra dimensions. With just three sterile neutrinos (gauge singlets), one can obtain the correct abundance of dark matter, a very simple explanation for the observed flavour oscillations and mass splittings of the active neutrinos, and a natural explanation for the baryon asymmetry (Dodelson & Widrow 1994;Shi & Fuller 1999;Dolgov & Hansen 2002;Abazajian et al 2001a;Canetti et al 2013b). The underlying particle model, called the νMSM, is described in detail in a number of papers (Asaka et al , 2007Shaposhnikov & Tkachev 2006;Shaposhnikov 2008;Gorbunov & Shaposhnikov 2007;Laine & Shaposhnikov 2008;Canetti et al 2013a), and recent reviews (Boyarsky et al 2009b;Kusenko 2009;Drewes 2013).…”

Section: Annihilation-like Dark Mattermentioning

confidence: 99%

“…Mass-mixing angle constraints on sterile neutrino like dark matter candidates. Above/below the dashed black lines the sterile neutrinos will be over/under produced relative to the observed dark matter density (Laine & Shaposhnikov 2008;Canetti et al 2013b). The grey shaded regions are X-ray exclusion lines from XMM-Newton and Chandra observations (Boyarsky et al 2008a(Boyarsky et al , 2006aRiemer-Sørensen & Hansen 2009) with the Boyarsky et al (2008a) constraints rescaled by a factor of two due to mass estimate uncertainties as recommended in Boyarsky et al (2009b).…”

Section: Constraints On Sterile Neutrinosmentioning

confidence: 99%

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Constraints on the presence of a 3.5 keV dark matter emission line fromChandraobservations of the Galactic centre

Riemer-Sørensen

2016

A&A

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Context. Recent findings of line emission at 3.5 keV in both individual and stacked X-ray spectra of galaxy clusters have been speculated to have dark matter origin. Aims. If the origin is indeed dark matter, the emission line is expected to be detectable from the Milky Way dark matter halo. Methods. We perform a line search in public Chandra X-ray observations of the region near Sgr A*. We derive upper limits on the line emission flux for the 2.0−9.0 keV energy interval and discuss their potential physical interpretations including various scenarios of decaying and annihilating dark matter. Results. While we find no clear evidence for its presence, the upper flux limits are not inconsistent with the recent detections for conservative mass profiles of the Milky Way. Conclusions. The results depend mildly on the spectral modelling, and strongly on the choice of dark matter profile.

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“…Some of the latter scenarios may also provide a possible explanation to the dark matter relic density considering, putting forward a keV-scale sterile neutrino as a viable candidate [11,17], and/or to the BAU through leptogenesis (via neutrino oscillations) [18][19][20][21][22][23].…”

Section: Jhep08(2016)079mentioning

confidence: 99%

Electron electric dipole moment in Inverse Seesaw models

Abada

Toma

2016

J. High Energ. Phys.

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Abstract:We consider the contribution of sterile neutrinos to the electric dipole moment of charged leptons in the most minimal realisation of the Inverse Seesaw mechanism, in which the Standard Model is extended by two right-handed neutrinos and two sterile fermion states. Our study shows that the two pairs of (heavy) pseudo-Dirac mass eigenstates can give significant contributions to the electron electric dipole moment, lying close to future experimental sensitivity if their masses are above the electroweak scale. The major contribution comes from two-loop diagrams with pseudo-Dirac neutrino states running in the loops. In our analysis we further discuss the possibility of having a successful leptogenesis in this framework, compatible with a large electron electric dipole moment.

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Sterile Neutrinos as the Origin of Dark and Baryonic Matter

Cited by 216 publications

References 117 publications

Reionization in sterile neutrino cosmologies

Reionization in sterile neutrino cosmologies

Constraints on the presence of a 3.5 keV dark matter emission line fromChandraobservations of the Galactic centre

Electron electric dipole moment in Inverse Seesaw models

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