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Dark matter, baryogenesis and neutrino oscillations from right-handed neutrinos

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Hybrid seesaw leptogenesis and TeV singlets

Majid Ekhterachian, Luca Vecchi

The appealing feature of inverse seesaw models is that the Standard Model (SM) neutrino mass emerges from the exchange of TeV scale singlets with sizable Yukawa couplings, which can be tested at colliders. However, the tiny Majorana mass splitting between ...

ELSEVIER SCIENCE BV2018

Baryogenesis in the vMSM: recent developments

Extension of the Standard Model with two right-handed neutrinos provides an economic and testable explanation of the origin of the baryon asymmetry of the Universe. We review recent progress in understanding dynamics of the asymmetry generation. We also pr ...

E D P SCIENCES2018

Initial condition for baryogenesis via neutrino oscillation

Shintaro Eijima

We consider a baryogenesis scenario via the oscillation of right-handed neutrinos with Majorana masses of the order of GeV, which are also responsible for neutrino masses by the seesaw mechanism. We study how the initial condition alters the prediction of ...

Amer Physical Soc2017

Fermion number violating effects in low scale leptogenesis

Shintaro Eijima

The existence of baryon asymmetry and dark matter in the Universe may be related to CP-violating reactions of three heavy neutral leptons (HNLs) with masses well below the Fermi scale. The dynamical description of the lepton asymmetry generation, which is ...

Elsevier2017

Freeze-out of baryon number in low-scale leptogenesis

Inar Timiryasov, Shintaro Eijima

Low-scale leptogenesis provides an economic and testable description of the origin of the baryon asymmetry of the Universe. In this scenario, the baryon asymmetry of the Universe is reprocessed from the lepton asymmetry by electroweak sphaleron processes. ...

Iop Publishing Ltd2017

Asymmetric dark matter and baryogenesis from pseudoscalar inflation

Eray Sabancilar, Yann David Cado

We show that both the baryon asymmetry of the Universe and the dark matter abundance can be explained within a single framework that makes use of maximally helical hypermagnetic fields produced during pseudoscalar inflation and the chiral anomaly in the St ...

Iop Publishing Ltd2017

A White Paper on keV sterile neutrino Dark Matter

Antoine Pierre Emmanuel Alexis Merle, Alexey Boyarsky, Laurent Gastaldo, Jonathan Leon Wolf, Julien Lesgourgues, Oleg Ruchayskiy, Marco Drewes, Igor Tkachev, Jan Hamann

We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, and particle physics - in each case viewed from both theoretical and experimental/o ...

Iop Publishing Ltd2017

Observation of the 1S-2S transition in trapped antihydrogen

Shirit Cohen

The spectrum of the hydrogen atom has played a central part in fundamental physics over the past 200 years. Historical examples of its importance include the wavelength measurements of absorption lines in the solar spectrum by Fraunhofer, the identificatio ...

Nature Publishing Group2017

Observation of the 1S–2S transition in trapped antihydrogen

Shirit Cohen

Springer Nature2017

Theta dependence in holographic QCD

Andrea Manenti

We study the effects of the CP-breaking topological theta-term in the large N-c QCD model by Witten, Sakai and Sugimoto with N-f degenerate light flavors. We first compute the ground state energy density, the topological susceptibility and the masses of th ...

Springer Nature2017