The Phenomenology of Right Handed Neutrinos

Drewes, Marco

doi:10.1142/s0218301313300191

Cited by 286 publications

(356 citation statements)

References 856 publications

(1,466 reference statements)

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“…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). Additionally, the sterile neutrino may have interesting effects on a range of astrophysical objects, for example as an explanation for pulsar kick velocities, facilitating core collapse supernova explosions, affecting early star formation, reionization and structure formation, or assisting inflation (Kusenko & Segrè 1997;Kusenko et al 2008;Hansen & Haiman 2004;Fryer & Kusenko 2006;Hidaka & Fuller 2006;Biermann & Kusenko 2006;Mapelli et al 2006;Shaposhnikov & Tkachev 2006;Bezrukov & Shaposhnikov 2008;Petraki & Kusenko 2008;Petraki 2008;Boyanovsky 2008;Gorbunov et al 2008).…”

Section: Annihilation-like Dark Mattermentioning

confidence: 99%

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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Section: Annihilation-like Dark Mattermentioning

confidence: 99%

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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“…In this paper we consider the possiblity that the dark radiation is made of the light sterile neutrinos (see [20][21][22][23]) whose existence is indicated by recent results of short-baseline (SBL) neutrino oscillation experiments [24][25][26][27][28][29][30]. In particular, we consider the simplest possibility of a 3+1 scheme, in which the three active flavor neutrinos ν e , ν µ , ν τ , are mainly composed of three very light neutrinos ν 1 , ν 2 , ν 3 , with masses much smaller than 1 eV and there is a sterile neutrino ν s which is mainly composed of a new massive neutrino ν 4 with mass m 4 ∼ 1 eV.…”

Section: Introductionmentioning

confidence: 99%

Light sterile neutrinos in cosmology and short-baseline oscillation experiments

Gariazzo

Giunti

Laveder

2013

J. High Energ. Phys.

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We analyze the most recent cosmological data, including Planck, taking into account the possible existence of a sterile neutrino with a mass at the eV scale indicated by short-baseline neutrino oscillations data in the 3+1 framework. We show that the contribution of local measurements of the Hubble constant induces an increase of the value of the effective number of relativistic degrees of freedom above the Standard Model value, giving an indication in favor of the existence of sterile neutrinos and their contribution to dark radiation. Furthermore, the measurements of the local galaxy cluster mass distribution favor the existence of sterile neutrinos with eV-scale masses, in agreement with short-baseline neutrino oscillations data. In this case there is no tension between cosmological and short-baseline neutrino oscillations data, but the contribution of the sterile neutrino to the effective number of relativistic degrees of freedom is likely to be smaller than one. Considering the Dodelson-Widrow and thermal models for the statistical cosmological distribution of sterile neutrinos, we found that in the Dodelson-Widrow model there is a slightly better compatibility between cosmological and short-baseline neutrino oscillations data and the required suppression of the production of sterile neutrinos in the early Universe is slightly smaller.

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“…The model in which some heavy Majorana neutrinos are added to the standard model is a very interesting one (see [1] for a review) because it can potentially solve many problems of the standard model. The small mass of active neutrinos (whose order of magnitude can be inferred by neutrino oscillation experiments) can by explained by the seesaw mechanism [9] if one extends the standard model by introducing Majorana neutrinos.…”

Section: Effective Field Theory For Heavy Majorana Particles In the Ementioning

confidence: 99%

“…• Heavy Majorana neutrinos in the early universe, which might have an important role in solving several problems in cosmology (see [1] and references therein).…”

Section: Introductionmentioning

confidence: 99%

Effective Field Theories for heavy probes in a hot QCD plasma and in the early universe

Escobedo

2017

EPJ Web Conf.

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Abstract. There are many interesting problems in heavy-ion collisions and in cosmology that involve the interaction of a heavy particle with a medium. An example is the dissociation of heavy quarkonium seen in heavy-ion collisions. This was believed to be due to the screening of chromoelectric fields that prevents the heavy quarks from binding, however in the last years several perturbative and lattice computations have pointed out to the possibility that dissociation is due to the finite lifetime of a quarkonium state inside the medium. Regarding cosmology, the study of the behavior of heavy Majorana neutrinos in a hot medium is important to understand if this model can explain the origin of dark matter and the baryon asymmetry. A very convenient way of studying these problems is with the use of non-relativistic effective field theories (EFTs), this allows to make the computations in a more systematic way by defining a more suitable power counting and making it more difficult to miss necessary resummations. In this proceedings I will review the most important results obtained by applying the EFT formalism to the study of quarkonium suppression and Majorana neutrinos, I will also discuss how combining an EFT called potential non-relativistic QCD (pNRQCD) with concepts coming from the field of open quantum systems it is possible to understand how the population of the different quarkonium states evolve with time inside a thermal medium.

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The Phenomenology of Right Handed Neutrinos

Cited by 286 publications

References 856 publications

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

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

Light sterile neutrinos in cosmology and short-baseline oscillation experiments

Effective Field Theories for heavy probes in a hot QCD plasma and in the early universe

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